Condensation: Why Objective Reality Cannot Be Descartes’s Theory of Thought: Burman, Common Notions, and the Failure of the Strict Idea Model

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See the complete uncondensed version “Why Objective Reality Cannot Be Descartes’s Universal Theory Of Thought: Burman, Common Notions, And The Failure Of The Strict-Idea Model” and its companion piece “Why Objective Reality Cannot Be Universal In Descartes’s Theory Of Ideas: Nothing, Eternal Truths, Sensations, And Fear With Claude Opus 4.6.”]

Introduction by ChatGPT 5.5 Thinking

This post defends a restricted thesis about Descartes’s doctrine of objective reality. It does not claim that objective reality is empty, useless, or absent wherever thought is meaningful. It claims, more narrowly, that objective reality cannot function as Descartes’s universal theory of thought-content, intelligibility, or aboutness. Objective reality belongs most securely to strict ideas in which something is internally represented as objectively contained in the idea and can be measured by the relevant ontological rank of what is represented.

The argument therefore distinguishes objective reality from objective being, distinguishes strict ideas of things from broad-sense ideas or thoughts, and, most importantly, distinguishes propositional or truth-content from the constituent ideas that may be used in thinking a proposition. Once these distinctions are in place, Conversation with Burman, Principles of Philosophy I.48–49, common notions, the idea of nothing, and, on my reading, secondary-quality sensations, all exert pressure against universalizing readings of objective reality.

The central conclusion is not that every disputed item demonstrably lacks objective reality. That would be too strong. The central conclusion is that Descartes’s own texts block the easy inference from thinkability to objective reality. The defender of universal objective reality must therefore identify, case by case, the specific representatum allegedly contained objectively in the thought. In some cases—especially common notions such as ex nihilo, nihil fit (“From nothing, nothing comes”)—that specification is difficult to make stable.

Objective reality remains a powerful Cartesian doctrine, but it is not Descartes’s universal account of every form of thinkable content.

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Governing Thesis in One Sentence

 “Descartes’s doctrine of objective reality is not a universal theory of thought-content, but a restricted ontological measure: it applies where an idea internally represents something as objectively contained in it. Common notions, the idea of nothing, some intelligible-but-false judgments described below, and secondary-quality sensations together reveal a broader field of thinkable content that the objective reality apparatus does not, by itself, explain.”

The Post’s Dialectical Target

This post is directed at interpretations that universalize either of two theses:

    The strong universal thesis says that all Cartesian ideas contain objective reality.

    The weaker universal thesis says that every Cartesian idea is internally representational in the strict sense.

These theses are not identical. A commentator may deny universal objective reality while still holding that all ideas are representational. The post keeps these targets apart.

The central objection is that both theses risk flattening Descartes’s own taxonomy. Descartes recognizes strict ideas tanquam rerum imagines (“as if an image of a thing”), but he also recognizes broad sense ideas that include common notions, eternal truths, the idea of nothing, passions of the soul, secondary-quality sensations, acts of affirmation and denial, and other modes of thought. A theory that treats all of these as strict internally object-containing ideas with objective reality has to explain how that uniform model fits Descartes’s actual classifications.

The Table of Cartesian Commentators below therefore functions as part of the argument rather than as a decorative appendix. It displays how frequently commentators either identify ideahood with objective reality or at least identify ideahood with internal representation. The later sections then test these assumptions against Descartes’s own distinctions.

Objective Reality and Objective Being: The Distinction Needed at the Start

The argument requires a sharper distinction between objective being and objective reality than Descartes’s own vocabulary always supplies. Descartes uses esse objectivum and realitas objectiva in close proximity in the Third Meditation and the First Replies, and he does not consistently mark a terminological cleavage between them (cf. AT VII 41–42; AT VII 102–103). The distinction defended here is therefore reconstructive: it is anchored in what Descartes’s arguments require, not in two rigorously separated technical terms. Even where his vocabulary blurs, his argumentative practice insists on the difference.

Objective being concerns the way represented content exists in the intellect: not formally, as the sun exists outside the mind, but objectively, as the sun exists in the idea of the sun. It marks the special intentional mode of being possessed by what is contained in an idea as represented. Objective reality, by contrast, concerns the determinate represented content of the idea together with its ontological rank as represented. Thus an idea of a mode, an idea of a finite substance, and an idea of an infinite substance differ in objective reality because what is represented in each case differs both in content and in represented ontological status.
Put differently: objective being answers the question how the represented item exists in the intellect; objective reality answers the question what is represented and with what representational rank it is contained in the idea. The two notions are inseparable in standard cases of strict Cartesian representation, but they are not identical. Objective being names the way the representatum exists in the intellect; objective reality measures the determinate representational content of that representatum, including whether it is represented as a mode, a finite substance, or an infinite substance.

This distinction matters because a thought may be meaningful, thinkable, or present to consciousness without thereby containing a determinately rankable representatum in the strict objective-reality sense. A sensation, a passion, an awareness of nothing, or a common notion may be before the mind without functioning as a a strict idea that internally represents a thing or mode with objective reality. To treat every item before the mind as objective-reality-bearing would collapse Descartes’s distinction between broad-sense idea and a strict representational idea.

Why the Distinction Is Not Eliminative of Ontological Kind

The point is not that objective reality excludes ontological kind. On the contrary, when an idea internally represents a mode, a finite substance, or an infinite substance, that represented ontological kind belongs to the idea’s objective reality. The point is rather that objective reality is not identical with mere thinkability, mere mental presence, or mere objective being taken in abstraction. Objective reality measures already determinate represented content. It does not automatically attach to every mode of thought simply because that mode is present to consciousness.

This also explains why objective reality is indispensable to Descartes without being universal in scope. The doctrine does its decisive philosophical work in the causal-adequacy reasoning of the Third Meditation, where the rank of a represented content (mode, finite substance, infinite substance) constrains what could count as an adequate cause of the idea. That ranking apparatus is designed for ideas that enter the causal proof; mental episodes that do not enter that proof—sensations, negations, axioms, common notions—need not be assigned a rank at all.

The Proposition / Constituent Distinction

This distinction should be made early because it prevents much of the confusion surrounding eternal truths and common notions. A proposition can be thinkable, meaningful, and even clearly and distinctly perceived without itself being one unified objective reality-bearing representatum. At the same time, some of the constituent ideas used in thinking that proposition may themselves have objective reality.

For example, the thought figure is the limit of extension may involve constituents such as figure and extension. Extension is a strong candidate for objective reality because it is the principal attribute of body. But the proposition figure is the limit of extension, considered as a proposition, need not thereby be a further OR-bearing object over and above its constituents. It may instead be an eternal truth or intellectual proposition grasped by the mind.

The same point applies even more forcefully to ex nihilo, nihil fit. The proposition is intelligible and truth-bearing, but its explicit constituents—especially “nothing”—do not supply obvious candidates for positive objectively real contents. If the defender of objective reality for common notions wishes to treat the proposition itself as objectively contained, the defender must explain what the contained representatum is: nothingness, impossibility, causal dependence, being as such, or the truth-proposition itself. None of these candidates is cost-free.

This proposition/constituent distinction is crucial. It permits a restricted pro-OR claim for some constituent ideas while blocking an automatic pro-OR inference for the whole proposition as such.

Two Different Pressures Against Universalism

Two distinct pressures undermine universal objective reality readings.

First, secondary-quality sensations undermine the inference from broad-sense ideahood to objective reality (on the anti-OR reading defended throughout the DTOI website). A cold sensation can be a genuine Cartesian idea in the broad sense because it is immediately present to the mind as a mode of thought, while still lacking internally object-fixing objective reality. Such a sensation may externally represent as a lawfully connected sign of a bodily configuration, but it does not internally represent a positive quality of coldness as objectively contained in the idea.

Second, common notions pressure a different inference: the move from thinkability or clear intelligibility to strict idea-of-a-thing status. Descartes treats common notions as clearly and distinctly perceivable and indispensable to reasoning, yet Principles of Philosophy I.48–49 classifies them under eternal truths, and elsewhere, Conversation with Burman says that ideas of common notions are not strictly ideas of real things.

The argument is strongest when these two pressures are kept distinct. The sensory case challenges the universal move from idea to objective reality. The common-notion case challenges the universal move from thinkability to strict idea of a thing.

For extensive defense of the claim that secondary-quality sensations lack objective reality, see the following DTOI posts:

• Convincing ChatGPT 4.0 (April 2023 version) that Cartesian secondary quality sensations (SQS) have no objectively real mental content
• Proving that cold sensations do not have any objective reality to Bing’s Copilot with ChatGPT 4
• ScholarGPT (January 2025) asserts independently that a cold sensation lacks objective reality
• ChatGPT 4.5 (February 2025) defends material false sensations lack objectively real representational content
• Proving sensations are ideas with no objective reality to ScholarGPT

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Cartesian Commentators on the Status of Ideas

The following table distinguishes commentators who endorse the strong universal thesis that all ideas contain objectively real representational content from those who defend only the weaker universal representational thesis that all ideas are representational. The point is not that each commentator says exactly the same thing. The point is that each, in a different way, helps illustrate the pressure to assimilate Cartesian thought to a uniform internal-representational model.

Abbreviations: OR = objective reality; SQ = secondary quality; MF = materially false idea.

Cartesian Commentator	Accepts or Rejects  Universal Thesis	Supporting “Quotations” & [Objections]
Deborah J. Brown	Accepts the strong universal thesis. Brown explicitly extends objective reality to materially false ideas. (DJB1–2)	“Descartes on True and False Ideas.” In A Companion to Descartes, edited by  Janet Broughton and John Carriero, 196–215. Malden, MA: Blackwell Publishing, 2008. (DJB1) “. . . . Descartes’s objective existence theory of ideas and the notion of material falsity. The former seems to entail that for an idea to be of x, x must have (objective) being, . . . .” (205) [False. A sensation can be of cold or of pain in the broad Cartesian sense without containing any objective reality.] (DJB2) “Materially false ideas, like all ideas, have objective reality.” (207) [False. As argued below, materially false secondary-quality sensations lack objective reality.]
John Carriero	Accepts the strong universal thesis. Carriero treats all ideas as making reality available to mind and as containing objective being. (JC1)–(JC5)	Between Two Worlds: A Reading of Descartes’s Meditations. Princeton, NJ: Princeton University Press, 2009. (JC1) “I believe that this overtone continues with Descartes, so that for him, too, an idea is some form or structure—some “reality”—existing objectively in the mind . . . . However, I think it is the same story with sensory ideas. They, too, involve the existence of structure (presumably some corporeal configuration) in the mind. What Descartes says about sensory ideas is that the structure (the “reality”) that is found objectively in them is obscure and confused.” (20–21) [False. A first-order sensation has formally real phenomenal structure, such as coolness or redness, without thereby containing objective reality.] (JC2) “. . . all ideas—whether purely intellectual (such as my idea of myself or of God) or imaginative (such as my idea of a chimera or my visualization of a triangle) or sensory (such as my idea of greenness)—exhibit or present reality to the mind: the reality contained in the thing that is being thought of exists objectively in the idea.” (158) [False. A cold sensation presents phenomenal coolness to the mind, but it does not internally represent coolness (or it would not feel chilly) and thus does not contain objective reality.] (JC3) “He says there [Third Meditation] that, although all ideas, including sensory ideas, “are as it were of things” (III.¶19; 7:44; 2:30), sensory ideas present what they present in a way that leaves open whether what is being presented is a reality or an absence of reality.” (163–64) [False. A cold sensation presents positive phenomenal coolness, not an absence of reality.] (JC4) “On Descartes’s own view of sensory perception, the microphysical texture as it exists objectively (and obscurely and confusedly) in a sensory idea is not similar to—is not a replica of—the microphysical texture as it exists in the body.” (405) [False. When a sensation leaves one unable to tell whether it presents a real quality, a privation, or neither, that indeterminacy is better taken to show that the sensation contains no internally object-fixing objective reality.] (JC5) “I think all sensory ideas, including cold in the imagined case, involve the confused importation of corporeal structure from the world, so even if cold is an absence or privation, it involves corporeal structure.” (409) [Carriero equivocates on “involves”: a sensation may ‘involve’ a causal relation to corporeal structure without containing that structure as objective reality.]
Vere Chappell	Accepts both the strong universal thesis (VC2) and the weaker universal representational thesis in a universal two-aspect model: every material idea stands in a necessary representational relation to an idea with OR. (VC0) (VC1)	“The Theory of Ideas.” In Essays in Descartes’ Meditations, edited by  Amélie Oksenberg Rorty, 177–98. Los Angeles: University of California Press, 1986. (VC0) “From now on I shall abbreviate ‘idea in the material sense’ and ‘idea in the objective sense’ to ‘ideam’ and ‘ideao,’ respectively. Ideasm and ideaso, furthermore, are related, in that the latter are things represented by the former.” (178) [The objective sense is the objective reality content of an idea, not an object that a material idea represents as a second representation; moreover, many Cartesian mental modes exist without objective reality.] (VC1) “Ideasm and ideaso, furthermore, are related in that the latter are things represented by the former. . . . Later on we shall see that the relation is necessary on the other side also, and that every ideam represents an ideao. Descartes’ position, indeed, is that there is, for every ideam, exactly one ideao that it represents, and for every ideao, exactly one ideam that represents it.” (178) [If every ideam represented an ideao, then the idea of a lion would represent not a lion but a representation of a lion; moreover, some mental modes have no objective reality at all.] (VC2) “It is that these are not distinct entities at all—not one individual thing and then a second, different one—but are rather one thing on the one hand, and an aspect or component of that same thing on the other. The ideam and the ideao only differ from one another, to use Descartes’ own expression, by a ‘distinction of reason.’” (179) [Chappell wrongly universalizes a relation that Descartes can sustain only for ideas taken strictly as if “images of things,” since many thoughts that Descartes still calls ideas—such as sensations of pain or cold, common notions, and the idea of nothing—exist in the mind as modes of thought without thereby containing any object existing objectively in the intellect.]
David Cunning	Rejects both the strong universal thesis: every idea has formal reality and objective being (and exhibits an internal object). (DC1–2) and the weaker universal representational thesis: all ideas are intrinsically representational. (DC3–4) Accepts the strong universal thesis for strict ideas [tanquam rerum imagines], denying that sensations themselves are strict ideas. (DC3) Problematically, Cunning underemphasizes sensations as broad sense ideas and denies that material falsity resides in the sensations themselves. (DC2, 3 & 5)	“Descartes on Sensations and Ideas of Sensations.” In An Anthology of Philosophical Studies, 17–32. Athens: Atiner Publishing, 2006. (DC1) “For Descartes, objective reality is something that is internal to an idea. [ . . . . ] However, it appears to be just a brute phenomenological fact that when we introspect and consider (for example) a sensation of coldness, there is nothing more to what we are considering than the quale itself. In particular, an examination of the mere sensation of coldness does not provide us with any information about the bodies that occasion it. [. . .] there is good philosophical reason for thinking that sensations do not have objective reality.” (27) [True.] (DC2) “A Cartesian sensation is a mode of mind but not an idea. If it is representational, it is not representational in virtue of having objective reality but in virtue of something else.” (18) [False. Secondary-quality sensations count as broad-sense ideas for Descartes, even though they do not contain objective reality.] Rejection of the weaker universal representational thesis (“all ideas are intrinsically representational”) — (DC5) (DC3) “Another is that ideas are representational. Indeed, Descartes says that although something can be dubbed a ‘thought’ in a loose sense so long as it is a mode of mind, the term ‘idea’ is to be reserved for modes of mind that are of objects.” (23) (Third Meditation: AT VII: 37) [Cunning should restrict this claim to strict ideas, because Descartes continues to call broad-sense non-representational modes ‘ideas’ even when they lack strict OR-representational content.] (DC4) “Sensations are qualia that we perceive as a result of the impact of bodies on our senses.” (20) [Internal sensations such as hunger need not arise from the impact of external bodies on the senses.] Cunning accepts the strong thesis (objective reality / internal object) exclusively for strict-sense ideas while repeatedly denying that raw sensations qualify as such. [True.] Underemphasis of sensations as broad-sense ideas and denial that material falsity resides in the sensations themselves (DC5) “A false idea of a sensation [not a sensation], on the other hand, might misrepresent that sensation as something other than a mode of mind. [. . .] Descartes thus says that a false idea of a sensation ‘does have something positive as its underlying subject, namely the actual sensation involved.’” (18) (Fourth Replies: AT VII: 234) [Cunning misreads the passage here: Descartes attributes the positive underlying subject to the sensation itself, not to a higher-order idea of that sensation. Cunning consistently locates material falsity in the (higher-order) idea of the sensation, not in the sensation/qualia itself. He underemphasizes acknowledgment of sensations as broad-sense ideas (the “form of any given thought”); he treats them strictly as non-ideas/qualia. SQ-sensations are broad sense ideas and are themselves materially false prior to any formal judgment. For a defense, see my post “What Makes An Idea Materially False In Descartes’s Theory Of Ideas?: Why Mere Error-Causation Is Insufficient, Why The Three Main Cases Form An Analogical Unity, And Why Hoffman Mislocates The Relevant Non-Thing With ChatGPT 5.4 Thinking.”]
Michael Della Rocca	Accepts the weaker universal representational thesis. Della Rocca says all ideas are representations, but in the verified passage he does not separately state the stronger universal-objective reality thesis. (MDR1) See the table below for an extensive critique.	“Judgment and Will.” In The Blackwell Guide to Descartes’ Meditations, edited by Stephen Gaukroger, 142–59. Malden, MA: Blackwell Publishing, 2006. (MDR1) “And, for Descartes, all ideas are representations; they are of things or at least they purport to be of things.” (“Judgment and Will,” 146) [A cold sensation can be of phenomenal coolness in the broad sense without internally representing anything via objective reality, as defended below and throughout the DTOI website.]
Claudia Lorena García	Rejects the strong universal thesis. García argues that materially false sensory ideas can represent non-things and lack objective reality. (CLG5) Accepts the weaker universal representational thesis. (CLG1–4)	“Descartes: Ideas and the Mark of the Mental.” History of Philosophy & Logical Analysis 3, no. 1 (2000): 21–53. (CLG1) “Moreover, concerning obscure and confused ideas—some of which are false—one often cannot begin to tell what they represent.” (3) [Here García simply assumes that obscure and confused ideas internally represent something, but that assumption is precisely what my anti-objective reality reading denies.] (CLG2) “Ideas are those of our thoughts which are as it were of things; each of them appears to us to represent some thing, some res.” (4) [The common notion or eternal truth ex nihilo, nihil fit neither appears as a thing nor represents a thing.] (CLG3) “Note that, by saying that ideas can be materially false, Descartes embraces the view that it is possible for an idea to misrepresent what it represents.” (10) [Descartes need not treat material falsity as a misrepresentation of represented content, because a cold sensation does not internally misrepresent anything and contains no objective reality. For a defense, see ‘Proving God Is Not A Deceiver Because Sensations Lack Objectively Real Contents To ScholarGPT V2 (October 2023).’] (CLG4) “I must emphasize that the reason why an idea is materially false, in my interpretation, is not that it fails to represent . . . .” (20) [If a materially false idea lacks objective reality, García still owes an argument for why immediate phenomenal presentation already counts as internal representation rather than mere phenomenal presence.] (CLG5) “Now, I disagree with Hoffman on this second point. I think that there are sufficient reasons—both of textual adequacy and of overall interpretive coherence—to think that Descartes is committed to the view that sensory ideas, not only can be, but also are materially false: that they represent non-things and lack objective reality.” (20) [If a materially false sensory idea lacks objective reality, García must explain how it internally represents a non-thing at all. If phenomenal coolness constitutes the sensation’s immediate content, then that content is a real mode of mind, not an impossible pseudo-item. So material falsity cannot consist in presenting something that ‘cannot exist anywhere.’]
Dan Kaufman	Accepts the strong universal thesis. Kaufman argues that Descartes is committed to the claim that all ideas have some degree of objective reality. (DK1–2)	“Descartes on the Objective Reality of Materially False Ideas.” Pacific Philosophical Quarterly 81, no. 4 (2000): 385–408. (DK1) “ . . . Descartes holds that ideas in the material sense have ideas in the objective sense as their content.” (386) [False. Not all ideas have ideas in the objective sense as their content: secondary-quality sensations, the idea of nothing, and many eternal truths do not, as argued below.] (DK2) “I have stated earlier that Descartes thinks that all ideas have objective being/existence. But Descartes is also committed to the fact that all ideas have some degree of objective reality.” (395). [False. Zero degrees of objective reality do not count as some degree, and the idea of nothing has zero objective reality because nothing has zero formal reality.]
Steven Nadler	Accepts both the strong universal thesis (SN1–2) and the weaker universal representational thesis. (SN3) Nadler treats objective reality and representational content as essential to every idea.	“The Doctrine of Ideas.” In The Blackwell Guide to Descartes’ Meditations, edited by  Stephen Gaukroger, 86–103. Malden, MA: Blackwell Publishing, 2006. (SN1) “We can say, in fact, that for Descartes objective reality is a defining feature of the mind’s ideas: ‘Some of my thoughts are as it were images of things, and it is only in these cases that the term “idea” is strictly appropriate.’ It is essential to an idea that it has a representational content that it displays to the mind. ‘The objective mode of being belongs to ideas by their very nature.’ (Meditation III, AT VI: 42)” (92) [Nadler overgeneralizes here. A mind can apprehend content without thereby apprehending internally representational objective reality content, and pain provides an obvious case.] (SN2) “This content of an idea, which allows us to discriminate one idea from another by its object, is what Descartes is referring to when he speaks of an idea’s ‘objective reality.’ It is what the idea represents (or, better, presents) to the mind. The objective reality of an idea is what makes the idea ‘like a picture or image’ and allows it to make something (e.g., the sun, in the case of the idea of the sun) immediately present to the mind. An idea’s objective reality gives the idea what philosophers have called ‘intentionality.’ It makes an idea the idea of something.” (91–92) [False. Formal differences among mental modes can be discriminating content without objective reality: sharp pain differs from dull pain even though neither contains objective reality.] Supporting the weaker thesis (all ideas are (internally) representational) (Nadler’s interpretive claim that extends representational content universally via the “core” idea): (SN3) “At the core of every idea in the broad sense is an idea in the strict sense, giving it a specific content or referent.” (87) [What internally representational objective reality referent does a cold sensation contain? It cannot be phenomenal coolness itself, because the sensation presents that coolness as a formally real felt mode, not as an OR representation of coolness.] (Nadler on the strict/narrow sense as inherently representational, which the “core” claim then universalizes): (SN4) “In the narrow sense – ‘idea’ as species – the word refers only to those mental items that are ‘as it were images of things [tanquam rerum imagines]’ or representational states. . . . Strictly speaking, however, ideas (in the narrow sense) are those states of consciousness that are image-like appearances. Ideas (in the narrow sense) are all those visions, thoughts, feelings and other imagines that stand before the mind’s eye in consciousness and that are the objects of the mind’s active attitudes . . . .” (88) [Pain can stand before the mind as the object of awareness without thereby qualifying as a narrow idea with objective reality.] (SN5) “For something to have objective being. . . . means that the thing exists in some mind insofar as it is being thought about by that mind. It is a mode of being in the understanding. . . . as the intentional object that the understanding grasps. In a word, something is in the mind ‘objectively’ when it is thought about, understood, or perceived.” (92) [A mind can perceive pain immediately without containing pain objectively as an intentional object.] (SN6) “For the most part, we can distinguish two senses of ‘idea’ for Descartes: a broad sense and a strict sense. In the broad meaning of ‘idea’—‘idea’ as genus—the word refers to any mental item, any state of the mind, whether it be an image, an affect, or a volitional act. Ideas in this general sense are states of consciousness, and these come in a great variety: perceptions, imaginings, thoughts, desires, feelings, willings, doubtings, and so on.” (87) [Therefore, if ‘perceptions’ include SQ-sensations, then they qualify as broad sense ideas, while Nadler claims they are narrow.] (SN7) “In the narrow sense—‘idea’ as species—the word refers only to those mental items that are ‘as it were images of things [tanquam rerum imagines]’ or representational states. These include sense perceptions of physical things, pure intellectual thoughts (e.g., of mathematical figures), imaginings (e.g., of unicorns), dreams, and sensations and feelings (pain, pleasure). Both the sensory appearance of the sun as a small, yellow, warm disc and the conceptual understanding of the sun as an enormous body of gas are equally ideas in the narrow sense.” (87) [Nadler recognizes Descartes’s broad/strict distinction, then misclassifies broad sense sensations (sensory appearances) as narrow/strict ideas.] (SN8) “In sum, then, we can say that ideas generally speaking are the states of consciousness of which the mind is immediately aware.” (88) [True. Nadler recognizes that acts of awareness are broad sense ideas for Descartes, so sensory awareness, i.e., a mind’s experienced sensations are guaranteed to qualify as broad sense ideas.] (SN9) “This, in fact, is precisely how Descartes defines ‘thought’ in the Principles of Philosophy: ‘By the term “thought,” I understand everything which we are aware of as happening within us, in so far as we have awareness of it’ (Principles: I.9). An ‘idea,’ correlatively, is what is apprehended by the mind when one is conscious of the thought: ‘Idea: I understand this term to mean the form of any given thought, immediate perception of which makes me aware of the thought.’ (Second Replies: AT VII 160) (88) [True. Because the mind immediately apprehends secondary-quality sensations and eternal truths, both qualify as ideas in the broad sense.]
Lawrence Nolan	Accepts both the strong universal thesis: every idea has formal reality and objective being (and exhibits an internal object). (LN1), (LN3), (LN4). (LN5) and the weaker universal representational thesis: all ideas are intrinsically representational. (LN2)	“The Ontological Status of Cartesian Natures.” Pacific Philosophical Quarterly 78, no. 2 (1997): 169–94. (LN1) “For Descartes, every idea has two distinct kinds of being or reality—‘formal’ and ‘objective’—and, consequently, can be regarded in two ways. When we think of ideas as modes or operations of the mind, we are regarding them in terms of their formal or actual being. This is the kind of reality that ideas share with all actually existing things, whether material or spiritual. As modes, ideas also have the same degree of formal being as all other modes and as each other.” (174) [False. Some ideas—pain, secondary-quality sensations, the idea of nothing, and certain eternal truths such as ex nihilo, nihil fit—contain no objective reality.] (LN2) “Since ideas are intrinsically representational for Descartes, every idea exhibits some internal object to the intellect whether or not the object exhibited has a counterpart outside the intellect. For example, I have ideas which represent other men, animals, and angels ‘even if there are no men besides me, no animals, and no angels in the world.’ (Third Meditation; AT VII, 43). While lacking actual or formal existence, these things at least have objective being in the mind.” (175) [False. A mental state can exhibit content to a mind without internally representing an object with objective reality.] (LN3) “In a move which will have important consequences for the ontology of mathematical objects, Descartes identifies this internal object of thought with the idea itself considered objectively. In the Third Meditation, he says that objective being is the mode of being ‘by which a thing exists . . . in the intellect by way of an idea’ (AT VII 41; CSM II 29). This does not yet state the identification between an idea and its internal object, but it is suggestive of it.” (175–76) [False. In a case such as a cold sensation, the ‘internal object of thought’ is just the formally real phenomenal content; the sensation does not contain that content as objective reality or it would not feel chilly.] (LN4) “But, as Chappell has noted, Descartes thinks the term res cogitata is ambiguous. Whereas Caterus uses it to refer to something outside the intellect, Descartes says he intended it to stand for the idea itself ‘which is never outside the intellect.’ The idea of the sun, for example, ‘is the thing which is thought of [res cogitata] in so far as it has objective being in the intellect’ (AT VII 102; CSM II 74–75).” (176) [True for narrow-sense ideas, but false if Nolan extends the claim to all broad-sense ideas.] (LN5) “As we have seen, formal reality characterizes things that actually exist. Objective reality, by contrast, is the kind of reality that things in the intellect possess, as the internal objects of thought.” (176) [False. A cold sensation presents phenomenal coolness as an internal object of thought without containing that coolness as objective reality.]

  The sharpest division in this group is between commentators who explicitly say that all ideas have objective reality—Brown, Carriero, Chappell, Kaufman, Nadler, and Nolan—and those who stop at the weaker thesis that all ideas are representational—Della Rocca and García. Cunning is the clearest directly verified rejector of both universal theses in the set, although his treatment of sensations as non-ideas is too restrictive.

The table therefore sets up the post’s central pressure: Descartes’s own texts require a more differentiated account than the universal models provide.

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Common Notions Are the Strongest Case Within This Post

The anti-universal argument developed here is strongest, within the present post, for common notions such as ex nihilo, nihil fit. It is weaker, and requires additional argument, when the topic shifts to geometrical essences or true and immutable natures. That distinction matters.

A successful challenge to universal objective reality does not by itself settle the status of every eternal truth. It does, however, undermine any attempt to derive objective reality for all such cases from a universal premise about Cartesian ideas as such. Even if one wished to defend objective reality for some geometrical essences, that would not rescue the broader universal thesis.

The strongest order of argument is therefore two-stage. First, reject the universal starting point. Second, examine the harder special cases individually. This prevents geometrical essences or true and immutable natures from being used to smuggle universality back in at the beginning.

What Common Notions Are for Descartes

In the Burman / Principles I.48–49 context, Descartes’s common notions are chiefly eternal truths or axioms: propositions that reside within the mind and are not things or modes of things. Although Burman’s authority is reportorial rather than authoritative, the relevant remarks cohere with Principles I.48–49 and with Descartes’s official taxonomy, so the dialectical pressure does not depend on Burman alone. This is the usage most directly relevant to Burman’s remark that ideas of common notions are not, strictly speaking, ideas of real things.

“All the objects of our perception may be regarded either as things or affections of things, or as eternal truths.” (AT VIIIA 23; CSM I 208)

“Such truths are termed common notions or axioms.” (AT VIIIA 23–24; CSM I 209)

Descartes gives examples such as “Nothing comes from nothing,” “It is impossible for the same thing to be and not to be at the same time,” “What is done cannot be undone,” and “He who thinks cannot but exist while he thinks” (AT VIIIA 23–24; CSM I 209). These examples matter because they are not introduced as object-like representata. They are introduced as truths.

“We also have ideas of common notions, which are not strictly speaking ideas of real things. But this is an extended sense of the term ‘idea’.”(Conversation with Burman, AT V 153; CSMK 338; Early Modern Texts trans., p. 6; Cottingham translation, p. 13)

That quotation does not deductively prove that common notions lack objective reality. It does prove that one cannot simply infer strict OR-bearing ideahood from the fact that common notions are thinkable or called “ideas” in an extended sense. The pro-OR interpreter must specify what, exactly, is objectively contained in the thought.

In the earlier Rules for the Direction of the Mind, Descartes also speaks of common notions as inferential links:

“those common notions which are, as it were, links which connect other simple natures together.” (AT X 419; CSM I 45)

This confirms the functional role of common notions: they are structural principles of inference, not ordinary object-presenting ideas. They have intelligible content, but that is not the same as objectively real representational content.

Do Common Notions Contain Objective Reality?

The best answer is: not as propositions or common notions considered in themselves. They are not empty noises; they are genuine, thinkable, truth-bearing contents. But their content is propositional or axiomatic rather than the internal object-content of a strict idea of a thing.

The following inference is therefore invalid:

1. We can think common notions.
2. Whatever we can think is an idea.
3. Every idea has objective reality.
4. Therefore common notions have objective reality.

The error lies in the equivocation between broad ideahood and strict idea-of-a-thing status. Burman blocks the automatic move from “we can call this an idea in an extended sense” to “therefore it is a strict idea with objective reality.” Principles I.48–49 likewise blocks the easy assimilation by placing common notions under eternal truths rather than under things or affections of things.

That said, the anti-OR reading should not overstate itself. The classificatory distinction by itself does not entail that common notions lack objective reality. It instead shifts the burden. A defender of OR for a common notion must say what is objectively contained in it. That is the decisive question.

The Idea of Nothing and the Limits of Strict Ideahood

The idea of nothing sharpens the point. Descartes does not deny that we can think “nothing.” He denies that this thought is a strict idea in the full objective reality sense.

“That idea is purely negative, and hardly counts as an idea at all.” (Conversation with Burman, AT V 146; CSMK 334; Early Modern Texts trans., p. 5)

Descartes’s point is not merely classificatory. It is also genetic. Nothingness is not grasped as a positive self-standing item. It is understood through being. In the same discussion, Descartes says that every defect and negation presupposes that of which it is a defect or negation. Thus the idea of nothing helps show that some contents are thinkable only derivatively and negatively, not as positive objective contents with their own rank of objective reality.

The contrast with the idea of a lion is instructive. A lion can be thought as a thing, and a strict idea of a lion can be assigned objective reality as an idea of a finite corporeal substance or animal. Nothing cannot be thought as a thing. It can only be thought negatively, through the negation of being. Hence the difference is not thinkable versus unthinkable; the difference is strict idea of a thing versus derivative negative thought.

Does Objective Reality Explain Aboutness?

The deeper explanatory question is whether objective reality explains why an idea is of its object, or whether Descartes assumes the ofness and then measures it. The texts support the second option.

“By the term idea I understand the form of any thought whatever, by the immediate perception of which I am conscious of the same thought itself.” (AT VII 160; CSM II 113)

“By the objective reality of an idea I mean the being of the thing represented by the idea, in so far as it exists in the idea.” (AT VII 161; CSM II 113)

The definition of objective reality presupposes representation: it is the being of the thing represented, insofar as that thing exists in the idea. It does not explain how the idea first becomes an idea of that thing.

The same structure appears in the Third Meditation. Descartes first distinguishes ideas as modes of thought from ideas considered representationally:

“But in so far as the ideas are simply modes of thought, there is no recognizable inequality among them.” (AT VII 40; CSM II 27–28)

“But considering them as images, of which one represents one thing and another a different thing, it is evident that they differ widely.” (AT VII 40; CSM II 28)

“those that represent substances are something more, and contain in themselves, so to speak, more objective reality than those that represent only modes or accidents.” (AT VII 40; CSM II 28)

The order matters. First, one idea represents one thing and another a different thing. Then objective reality is introduced as a way of ranking what is already represented. The doctrine measures represented content; it does not generate the original directedness. Nor does the ranking apparatus itself bind every mental episode. The hierarchy mode/finite substance/infinite substance is a measure designed for the causal-adequacy proof; episodes that do not enter that proof—sensations, negations, axioms—need not be assigned a rank at all.

That is why objective reality is not useless but non-basic. It is indispensable for Descartes’s causal adequacy argument in the Third Meditation. The idea of God must have a cause with at least as much formal reality as the idea contains objectively. But that causal argument already assumes that the idea is the idea of God. Objective reality then measures that content and determines what kind of cause would be adequate.

The conclusion is therefore precise: objective reality is not Descartes’s basic theory of intentionality. It presupposes intentional determinacy and then assigns an ontological measure to a subset of already intentional contents.

Conceptual Content Without Objective Reality

The term “concept” should be used carefully. Descartes does not officially introduce “concepts” as a separate mental ontology over and above ideas, judgments, common notions, and simple natures. But a modern interpreter may use “conceptual content” as a cautious label for thinkable intellectual contents not exhausted by objective reality.

The revised claim is not that Descartes explicitly posits concepts as a third mental kind. The claim is that Descartes’s practice commits him to non-OR conceptual or intellectual content. Common notions, eternal truths, negative conceptions, relations, and false but intelligible judgments all require thinkable materials that cannot simply be identified with objective reality.

The better formulation is therefore:

• Broad-sense ideas are the mental episodes or modes in which content is present to the mind.
• Some broad-sense ideas have objective reality because they internally represent a representatum.
• Some broad-sense ideas are vehicles of conceptual or intelligible content that lacks objective reality.

This preserves Descartes’s own vocabulary while acknowledging that his theory of thought is broader than the official objective reality apparatus.

False but intelligible judgments sharpen this result. A proposition such as “time is relative to speed” would not be an eternal truth for Descartes and would likely be judged false by him. Yet it is thinkable. Its thinkability cannot depend on being an eternal truth, and it need not be one unified OR-bearing representatum. It can be a composed act of intellect and judgment using broad intellectual materials such as duration, motion, relation, comparison, and measure. This case shows that thinkability outruns both eternal truth and objective reality.

Accordingly, “conceptual content” is acceptable if it means non-OR intellectual content available for thought and judgment. It is misleading only if it is treated as an explicit Cartesian ontology that Descartes himself formally names and separates from ideas.

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Nolan on Eternal Truths and Objective Reality

Lawrence Nolan’s “The Ontological Status of Cartesian Natures,” Pacific Philosophical Quarterly 78 (1997): 169–94, is one of the most serious pro-OR readings. Nolan’s paper is especially strong for true and immutable natures and geometrical essences. His explicit target is not primarily Burman’s discussion of common notions, but his argument can be extended to eternal truths if one grants his representational premises.

Nolan’s starting point is strongly representationalist. [See the (LN1-LN5) quotations at the end of the Table of Cartesian Commentators.] He claims that Cartesian ideas are intrinsically representational and that every idea exhibits an internal object to the intellect. Once that premise is granted, eternal truths can be brought into the objective reality framework if they can be shown to be innate ideas.

His strongest route runs as follows. First, true and immutable natures have objective being as innate ideas. Second, Descartes’s discussions of eternal truths and essences suggest that eternal truths are innate intellectual contents. Third, if eternal truths are innate ideas, and all ideas have objective being, then eternal truths contain objective reality. This is a powerful and elegant reading because it avoids Platonism while preserving the reality of mathematical and eternal-truth content in the mind.

The objection is not that Nolan’s reading is frivolous. It is that the final step remains under-argued for common notions such as ex nihilo, nihil fit. Descartes’s texts support the claim that common notions are innate, intelligible, and truth-bearing. They do not by themselves show that such truths contain objective reality. For that conclusion, the pro-OR reader must identify what is objectively contained.

Testing Candidate OR-Contents for Ex Nihilo, Nihil Fit

Candidate OR-content	Assessment
Nothingness	This is the weakest candidate. Burman says the idea of nothing is purely negative and hardly counts as an idea at all. If nothingness is the alleged representatum, then the view assigns objective being to what Descartes treats as barely even an idea.
Impossibility	Better than nothingness, but still insufficient. Impossibility captures the modal force of the axiom, but Descartes does not present impossibility as a positive internal object with a determinate objective reality grade. It functions more like what the intellect sees by natural light.
Causal dependence	This is the strongest candidate. The axiom expresses a positive intelligible order: being cannot arise from non-being; effects require causes. But even here Descartes most clearly gives us a necessary truth grasped by the intellect, not an object presented in an idea with objective being.
Being as such	This has some textual appeal because the axiom concerns being and non-being. But it is too generic. If the OR-content is merely being as such, the distinctive content of the axiom disappears.
The truth-proposition itself	This is closest to Nolan’s official ontology of eternal truths as innate ideas. But it risks renaming the problem rather than solving it. One must still explain how a proposition or eternal truth counts as objectively contained in the Third Meditation sense.

The strongest possible Nolanian candidate is causal dependence: the positive order according to which being must derive from a cause and cannot arise from non-being. But even that candidate remains under-supported as objective reality. It explains what the proposition is about; it does not yet show that the relevant content exists objectively in the intellect as a strict representatum.

The objection to Nolan can therefore be stated as follows:

Objection: Nolan infers objective reality from intelligibility plus innateness. But Descartes’s texts support only the weaker claim that eternal truths are innate and clearly thinkable. In the case of ex nihilo, nihil fit, every candidate OR-content either fails or remains underdetermined. Nothingness is too negative; impossibility is modal force; being as such is too generic; the proposition itself merely renames the problem; and causal dependence, though strongest, still looks more like intelligible truth-content than an objectively contained representatum. Hence Nolan has not shown that common notions and eternal truths, simply as such, possess objective reality.

Nolan’s Pro-OR Argument versus the Anti-OR Reply

Nolan’s pro-OR argument	Anti-OR reply from Principles I.49 and Burman
Nolan begins from a strong representational premise: Cartesian ideas are intrinsically representational. If that premise is granted, then once eternal truths are counted as ideas, OR follows naturally.	Burman blocks the automatic extension. Descartes says common notions are not strictly speaking ideas of real things. Extended-use ideahood does not automatically imply strict OR-bearing ideahood.
Nolan assimilates true and immutable natures to innate ideas with objective being. This is persuasive for geometrical essences such as triangle.	Principles I.49 places common notions such as “Nothing comes from nothing” in the class of eternal truths, not among things or modes of things. That classification creates pressure against reifying the proposition as an object-like representatum.
Nolan extends the point from essences to eternal truths: if eternal truths are innate ideas, and ideas have objective being, then eternal truths have OR.	The inference assumes the very universal premise in dispute. The anti-OR reading grants innateness and intelligibility while denying that they entail objective reality.
Nolan’s strongest candidate for ex nihilo, nihil fit is a positive intelligible order of causal dependence.	Causal dependence is the best pro-OR candidate, but Descartes still presents the axiom as a truth grasped by natural light, not as an internally contained object with objective being.
Nolan’s reading is unified and anti-Platonist: eternal truths are not external entities but innate contents in the mind.	The anti-OR reply is equally anti-Platonist: some eternal truths are in the mind as truth-content, not as objective reality-bearing representata. Existing in thought is not the same as containing objective reality.

The fairest verdict is this: Nolan’s reading remains formidable for geometrical essences and true and immutable natures. For common notions such as ex nihilo, nihil fit, however, the anti-OR reply from Principles I.49 and Burman is stronger because Descartes’s own classification is easier to reconcile with conceptual intelligibility than with strict OR-bearing internal representation.

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Secondary-Quality Sensations and the Sensory Pressure Against Universal OR

The sensory argument is distinct from the common-notion argument. It concerns broad-sense ideas that are positive modes of mind but lack internal objective reality. Secondary-quality sensations such as cold, pain, heat, and taste are formally real modes of thought. They may be clear and distinct qua sensations. They may also externally represent as lawfully connected signs of bodily configurations. But they do not thereby internally represent those configurations or secondary qualities by containing objective reality.

The strongest consideration is phenomenological and textual at once. A sensation of pain hurts. A representation of pain need not hurt. A cold sensation feels cold. A representation of coldness need not feel cold. This indicates that the felt quality belongs to the formal reality of the sensation as a mode of mind, not to objective reality as represented content.

The Fourth Replies cold passage reinforces the point:

Here Descartes distinguishes the positive sensation from the alleged external coldness that the mind may judge to be outside it.

“Thus if cold is simply an absence, the idea of cold is not coldness as it exists objectively in the intellect, but something else, which I erroneously mistake for this absence, namely a sensation which in fact has no existence outside the intellect.” (Fourth Replies: AT VII 233)

If cold is merely a privation, then the idea of cold is not cold itself objectively in the intellect; it is a certain sensation. The positivity lies in the sensation, not in a tiny objective reality content of coldness.

Therefore the anti-OR reading does not deny that sensations can represent in every sense. It denies that secondary-quality sensations internally represent via objective reality. They may externally represent as lawful signs of particular configurations of matter in motion, but their sign-function is not the same as objective reality.

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Against Gueroult’s Infinitesimal-OR Reading

Martial Gueroult    supports the minimal objective reality thesis in Descartes selon L’Ordre des Raisons. Vol 1: The Soul and God. Paris: Aubier, 1952. Translated by Roger Ariew as Descartes’ Philosophy Interpreted According to the Order of Reasons, Vol. 1: The Soul and God. Gueroult writes:

“From the perspective of being, it is materially an objective reality infinitely small, certainly as close as possible to zero, but not reducible to it and preserving something positive.” (220) “No doubt, the objective reality of the sensible idea is only a minimum; . . . .” (220) “It [objective reality] will lead to the unfolding of the whole range of objective realities, from the highest, that is, from the absolute maximum where it is infinite (God), down to the minimum, where it is the limit of being and nothingness, . . . .” (221). Translation by ChatGPT 5.2 Thinking.

Martial Gueroult’s interpretation is a sophisticated middle path. It preserves representationality for sensible ideas by treating their objective reality as minimal, nearly indistinguishable from nothingness, or infinitely small. This is attractive because it avoids saying that sensory ideas have robust objective reality while still resisting the claim that they have none.

However, the objections against Gueroult’s approach are strong.

1. Textual-basis problem. Descartes says in the Third Meditation that, if ideas such as heat and cold are true, the reality they represent is “so scanty” that he cannot distinguish it from unreality. But that does not amount to a doctrine of infinitesimal objective reality. Gueroult turns an epistemic-comparative remark into a quasi-mathematical ontology.
2. Wrong bearer problem. In the Fourth Replies, the positive element is the sensation itself or the faculty of sensation. That positivity is formal reality in the mind, not a tiny positive objective reality of external coldness.
3. Scale problem. Descartes’s objective reality hierarchy is structured around modes, finite substances, and infinite substance. Gueroult’s infinitesimal scale treats OR as though it varied continuously toward zero. That is not how the standard textual hierarchy is presented.
4. Causal-adequacy problem. If sensible ideas contain even infinitesimal positive OR, that content should require a formally or eminently adequate cause. Descartes instead connects materially false ideas to defect, obscurity, and confusion.
5. God-deceiver pressure. If God authors sensations with even infinitesimal false outward-directed objective content, the non-deceiver strategy becomes harder to sustain. Descartes’s better strategy is to locate the problem in obscure sensation and misuse of judgment, not in divine implantation of tiny false representata.
6. Formal/objective conflation. Sensations are positive and vivid as mental modes. That does not entail positive objective reality. Gueroult’s reading risks converting formal positivity into objective representational content.

The sharpest objection is this: Gueroult illegitimately converts Descartes’s claim that obscure sensory ideas, if true, represent a reality so scanty as to be scarcely distinguishable from unreality into a doctrine that sensations themselves contain infinitesimal objective reality. The Fourth Replies instead identifies the positive element as the formally real sensation in me and treats the misleading outward reference as arising from obscurity. Hence Gueroult collapses formal positivity into objective representational content.

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Table of Comparisons

Main Conclusion: The table suggests a four-part structure in Descartes that he never fully systematizes: (1) strict OR-bearing ideas of things, exemplified by lion; (2) purely negative derivative thinkables, exemplified by nothing; (3) clear non-thing truths or axioms, exemplified by common notions; and (4) positive sensory modes apt for material falsity, exemplified by cold sensation.

This strongly suggests that objective reality is not Descartes’s general theory of aboutness, but rather a theory of one subset of thinkable contents, namely, strict internally representational ideas.

Case	Strict idea?	Idea of a thing?	Objective reality?	Best Cartesian status	Dialectical pressure
Idea of a lion	Yes	Yes	Yes	Paradigm strict idea of a thing; apt for objective reality ranking in the Third Meditation.	If lion-directed thought is already determinate, objective reality measures content rather than generating aboutness.
Idea of nothing	No, or only in an extended/attenuated sense	No	No	Purely negative “idea,” hardly an idea at all, outside the strict sense.	Shows that genuine thinkability can outrun strict idea-of-a-thing structure and objective reality.
Common notion	No, not strictly	No	Not established; anti-OR reading says no as proposition	Eternal truth, axiom, or inferential link residing in the mind.	Shows that there are clear, innate, truth-bearing contents that are not easily assimilated to strict OR-bearing ideas.
Cold sensation	No, on the anti-OR reading	No, on that reading	No, as internally representational content	Broad-sense idea / sensory mode; externally representational as sign, but not internally OR-bearing.	Presses against any simple equation of sensory ideahood with objective reality.

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Conclusion by ChatGPT 5.5 Thinking

The significance of the argument is substantial. If the post is right, objective reality cannot be Descartes’s general account of intentionality, concepthood, or mental content. It is a theory of one special class of thoughts: strict ideas whose contents can be ranked by represented object-type and inserted into the causal-adequacy reasoning of the Third Meditation. That is a major restriction. It means that Descartes’s most famous doctrine of ideas does not explain thought as such, but only a delimited region within a wider mental economy.

The question is therefore no longer whether common notions, negative conceptions, false propositions, or sensory states can somehow be forced back into the ontology of objective reality. Some may have OR-bearing constituents. Some may be linked to OR-bearing ideas. But it does not follow that the propositions, negations, common notions, or sensations themselves are unified OR-bearing representata. The real question is whether Descartes possesses a sufficiently articulated theory of non-OR-bearing content once he acknowledges that such thought-content exists.

Although Burman’s authority is reportorial rather than authoritative, the relevant remarks cohere with Principles I.48–49 and with Descartes’s official taxonomy, so the dialectical pressure does not depend on Burman alone. Burman matters because he helps reveal this pressure. Burman does not merely provide an incidental remark about common notions. He shows Descartes’s own willingness to restrict strict ideahood and to recognize extended-use ‘ideas’ that are not ideas of real things. Once that is granted, the strongest Cartesian retreat is a layered account: strict ideas of things; common notions or axiomatic truths; derivative negative thoughts; broad sensory modes; and complex judgments that compose intellectual materials. That layered account is more textually stable than universal OR, but it comes at a cost: objective reality is no longer a universal theory of thought.

The deepest payoff is methodological. Objective reality should not be asked to do work Descartes’s texts do not show it doing. Descartes uses objective reality to rank already represented contents and to ground causal-metaphysical inferences, especially in the God proof. He does not show that objective reality first generates the ofness of thought. Once that explanatory order is restored, the landscape changes: aboutness becomes broader than objective reality, strict ideas become one species of content among others, and the task becomes mapping the larger Cartesian taxonomy of thinkable content rather than inflating objective reality until it covers every intelligible mental item.

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Appendix A: Full Argumentative Outline

• Main claim: Objective reality is not coextensive with all thinkable content. It applies most securely to strict ideas internally representing something as objectively contained.
• Textual pressure from Principles I.48–49: Descartes distinguishes things, affections of things, and eternal truths. Common notions are placed under eternal truths or axioms.
• Textual pressure from Burman: Descartes says the idea of nothing is purely negative and hardly an idea at all, and that ideas of common notions are not strictly ideas of real things.
• Inferential target: The invalid inference is from thinkability to ideahood, and from ideahood to objective reality.
• Positive case pressure: Even in a lion-thought, objective reality measures already determinate content; it does not explain the original lion-directedness.
• Proper role of objective reality: It ranks represented contents for causal-metaphysical purposes, especially in the Third Meditation proof of God.
• Comparative taxonomy: strict ideas of things; derivative negative contents; common notions and axioms; sensory modes.
• Final upshot: Descartes has materials for distinguishing OR-bearing contents from non-OR contents, but he does not fully stabilize this into a comprehensive theory.

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Appendix B: Addendum on Common Notions, Eternal Truths, and Non-OR Conceptual Content

This appendix consolidates the conversational addenda into argumentative form. The governing question is whether common notions such as ex nihilo, nihil fit contain objective reality. The answer defended here is that common notions have genuine conceptual or intelligible content, but that content should not be identified with objective reality unless a determinate or at least positively typed representatum can be specified.

Three clarifications are central.

1. The content of a common notion is not nothing. A common notion is an intelligible truth-content or axiom grasped by the intellect. It is capable of clear and distinct perception and can guide reasoning.
2. The content of a common notion is not automatically objective reality. Thinkability and innateness do not entail objective reality. Objective reality requires internal objective containment of a representatum.
3. Common notions may involve conceptual materials. The mind may employ notions such as being, nothing, impossibility, dependence, truth, or causality. But the presence of conceptual materials does not make the proposition as a whole one more OR-bearing item.

The most stable formulation is this: broad-sense ideas can be vehicles of conceptual content, and some conceptual content lacks objective reality. This is not the introduction of a new official Cartesian ontology called ‘concepts.’ It is a reconstruction of what Descartes’s texts require once common notions, negative conceptions, false judgments, and sensory modes are placed alongside strict ideas of things.

Thus:

• Nothing comes from nothing is thinkable, but it lacks a clear positive OR candidate as a unified proposition.
• It is impossible for the same thing to be and not to be at the same time is thinkable and necessary, but no specific objective reality content can be named with confidence as belonging to the proposition as such.
• Figure is the limit of extension may involve OR-bearing constituents such as extension, but the proposition as a whole need not be a unified OR-bearing representatum.
• False theoretical judgments are thinkable without being eternal truths or unified OR-bearing objects.

The conclusion is not that Descartes explicitly possesses a modern theory of concepts. It is that his practice commits him to a domain of non-OR thinkable content. Objective reality is therefore one format of content, not the universal condition of all content.

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Appendix C: Objections/Suggestions by George Rudebusch with Dr. Ring’s Replies Synopsized by ChatGPT 5.5 Thinking

Here is the critical summary.

1. Rudebusch’s objection: the idea of nothing may be only a general problem of non-being

Rudebusch’s point is that the idea of nothing may not create a special problem for Descartes. It may be just another instance of the old problem of non-being: how can thought or language be about what is not? One way to avoid the problem is to deny that nothing is ever genuinely used as a referring term. On that view, nothing does not name an object; we can only mention the word nothing.

Ring’s response is that this is unavailable to Descartes because Descartes is not merely asking about a word. When one has the idea of nothing, one is not simply thinking about an English inscription, a sound, or the linguistic item nothing. Descartes would distinguish the mental act directed toward non-being or privation from the mental act directed toward a written or spoken sign. So Rudebusch’s solution changes the object of analysis. It solves a linguistic puzzle by replacing Descartes’s problem with a different problem.

Critical verdict: Ring’s response is strong. Rudebusch’s objection works only if Descartes’s problem is semantic in the modern philosophy-of-language sense. But Descartes’s problem concerns ideas, objective reality, privation, and the causal-explanatory status of mental content. The linguistic deflation of nothing does not explain how Descartes can have a negative idea of nothing in Meditation IV, nor how materially false ideas can present a privation or non-thing in a way that inclines the mind toward false judgment.

2. Rudebusch’s sub-objection: the idea of the word “nothing” has objective reality

Rudebusch adds that there is objective reality in the idea of the word “nothing.” That is true if the idea is of a written mark, spoken sound, or conventional sign. A word-token is something: an inscription, vibration, sound pattern, or bodily/extended mode. So an idea of that word can possess objective reality at the modal level.

Ring’s response is that this is interesting but irrelevant. The idea of the word “nothing” is not the idea of nothing. The word-token has being; nothing does not. The first idea represents a linguistic item; the second is directed toward non-being, privation, or absence. Therefore Rudebusch has shown only that there can be objective reality in an idea of a sign. He has not shown that there is objective reality in the idea of nothing itself.

Critical verdict: Ring’s distinction is decisive. Rudebusch’s suggestion equivocates between the sign and what the sign is used to signify. The idea of the word “nothing” has modal objective reality because the word is a real item or mode. But that does not confer objective reality on nothing as such. The move is a bait-and-switch: it replaces a problematic negative idea with an unproblematic positive idea of a linguistic object.

3. Rudebusch’s objection: eternal truths may have propositions as their objective reality

Rudebusch’s proposal is that an eternal truth such as “From nothing, nothing comes” (ex nihilo, nihil fit) may have as its objective reality the proposition that “From nothing, nothing comes.” This would let one preserve objective reality by treating the proposition as what the mind represents.

Ring’s response is that Descartes will not want propositions functioning as objective beings in the relevant sense. Objective reality belongs to what is represented as a being, nature, substance, or mode. But eternal truths and common notions are not entities for Descartes. They are often truths, rules, or intellectual functions, not things represented with ontological rank. They can be clear, distinct, innate, and indispensable without thereby being objectively real contents in the strict Cartesian sense.

The crucial Ringian distinction is between intelligibility and objective reality. A thought can be meaningful without presenting a thing. The ex nihilo principle is not a blank in consciousness, but its intelligibility does not require a represented object with objective being. It functions as an intellectual rule or common notion rather than as a represented substance, mode, or nature.

Critical verdict: Ring’s response is philosophically stronger than Rudebusch’s proposal. Rudebusch imports a proposition-object ontology that Descartes has no need to accept and would likely resist. Once propositions are treated as objective beings, Descartes faces a further causal question: what gives the proposition its being? Ring avoids that inflation by distinguishing strict representational content from intellectual function. The cost is that Ring must insist on a narrow sense of objective reality: not every clear and distinct thought has objective reality, even though it may have determinate intellectual content.

4. Rudebusch’s concession or non-objection: secondary sensations

Rudebusch says that he has no reply concerning secondary sensations. That is significant because secondary sensations are a harder case for his linguistic and propositional strategies. Cold, heat, pain, color, and similar sensations cannot plausibly be reduced to words, nor are they naturally treated as propositions. They are occurrent sensory modes.

Ring’s implied response is that secondary sensations have formal reality as modes of thought but do not, merely as sensations, contain objective reality. A sensation of cold presents itself phenomenally; it does not contain an objectively real cold-quality as its internal representatum. Its material falsity arises because its presentational character inclines the mind to treat a non-thing, privation, or confused sensory appearance as if it were a real quality in bodies.

Critical verdict: this is a major point in Ring’s favor. Rudebusch’s earlier maneuvers do not generalize. The word-strategy handles only linguistic tokens. The proposition-strategy handles only judgment-like contents. Neither explains sensory ideas such as cold. If Ring’s account of secondary sensations is right, then the universal thesis that every idea contains objective reality is false. Some thoughts are ideas in the broad Cartesian sense without being internally representational in the strict objective-reality sense.

5. Rudebusch’s further question: propositional attitudes

Rudebusch asks how to treat fearing, loving, desiring, wishing, hating, doubting, affirming, denying, and similar acts. This is not exactly an objection, but it tests whether Ring’s distinction between act, object, and objective reality can handle complex mental states.

The Ringian response should be:

Propositional attitudes are formally real modes of thought. They may include objective reality when they contain or presuppose an idea of an object, but the attitude-form itself is not objective reality content.

For example:

Mental state	What has formal reality	What has objective reality	Ringian treatment
Fearing a lion	The act of fearing	The idea of the lion	Fear as fear has no objective reality; the embedded idea of the lion does
Loving God	The act of loving	The idea of God	Love is a volitional or affective mode; the idea of God carries objective reality
Desiring water	The act of desiring	The idea of water, if intellectually represented	Desire itself is not the objective content
Hating injustice	The act of hating	Whatever content is involved in the idea of injustice	The hatred is a mode; the represented content must be separately analyzed
Doubting that P	The act of doubting	The relevant ideas involved in P, if any	Doubt is not itself an idea-object
Affirming that P	The act of affirmation	The ideas or common notions involved in P	Affirmation is an act of judgment, not a new representatum
Denying that P	The act of denial	The ideas involved in P, plus negation as intellectual operation	Denial does not add objective reality as an object

This preserves the Cartesian distinction between ideas strictly taken and other forms of thought. Some mental acts contain ideas; some presuppose ideas; some modify one’s stance toward ideas; but it does not follow that the act itself has objective reality.

Critical verdict: Rudebusch’s question is useful because it exposes the main issue. A modern theory of intentionality may treat fearing, loving, doubting, and affirming as propositional attitudes with representational contents. But Descartes’s theory is not automatically a modern propositional-attitude theory. For Descartes, there is a difference between the idea involved in an act and the further form of thought by which the mind fears, loves, wills, affirms, or denies. Ring’s answer should be that objective reality attaches, when it attaches at all, to the idea-content included in the act, not to the affective, volitional, or judicative attitude as such.

Overall assessment

Rudebusch’s objections are attempts to save a broader representational reading by relocating difficult cases into three safer categories:

1. The idea of nothing becomes an issue about the word nothing.
2. Eternal truths become proposition-objects.
3. Complex attitudes become representational contents.

Ring’s responses block all three relocations. The controlling principle is that Descartes’s objective reality is not equivalent to meaningfulness, thinkability, linguistic reference, propositional structure, or psychological directedness. Objective reality belongs only to ideas that contain a represented being, nature, substance, or mode in the strict Cartesian sense. Words, propositions, attitudes, and sensations must therefore be disaggregated: each may involve thought, awareness, or formal reality without thereby containing objective reality.

The strongest Ringian conclusion is this:

Descartes needs a broader category of thought than objective-reality-bearing representation. Some thoughts are meaningful, clear, distinct, innate, operational, affective, or judicative without presenting an objectively real representatum. Rudebusch’s objections are valuable because they pressure the theory at its weakest points, but they fail wherever they replace Descartes’s problem about idea-content with a different problem about words, propositions, or modern propositional attitudes.

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Works Cited

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