When Does Content in an Idea Have Objective Reality?

August 17, 2026

Abstract

Discussions of Descartes’s theory of objective reality (OR) found in ideas often begin by asking which ideas possess it. That formulation is potentially misleading because it treats the whole idea or cognitive episode as the primary unit to which objective reality is assigned. A more precise analysis asks which content within a cognition, if any, bears objective reality. A Cartesian cognition can combine an internal representation of a representatum (item represented) with phenomenal, affective, volitional, judicative, or classificatory content. The presence of these latter forms of content does not by itself make them objectively real representations. Objective reality belongs specifically to content by which an ontologically eligible representatum is internally present as represented.

This component-level account supports the Restriction Thesis: Objective reality occurs only in content within a thought whose representatum is an actual or possible substance, attribute, or mode in Cartesian ontology, or a true and immutable nature or essence specifying such a possible substance, attribute, or mode. An ontologically eligible representatum makes the content OR-bearing at the degree appropriate to what is represented. Thus a broad cognition such as fearing a lion can contain objective reality without the fear itself possessing it, while phenomenal coolness or a second-order classificatory relation can be determinate without contributing objective reality of their own. The result is an interpretation of Cartesian objective reality on which some contents possess no objective reality at all, while those that do are ranked according to the ontological status of their representata.

Introduction

Descartes introduces objective reality in the Third Meditation through comparisons among ideas. He says that ideas representing substances “contain within themselves more objective reality” than ideas representing modes or accidents (AT VII 40; CSM II 28), while the idea of God “certainly has in it more objective reality” than ideas representing finite substances (AT VII 40; CSM II 28). This hierarchy naturally directs attention toward the degree of objective reality contained in an idea. But the hierarchy does not by itself settle what becomes a pressing issue once the full range of Cartesian cognition is considered: what within a thought is the sort of content to which objective reality belongs at all?

The difficulty arises because Cartesian thought contains much more than the representations ranked in the Third Meditation. Descartes distinguishes ideas in the strict sense from thoughts involving willing, fearing, affirming, and denying by observing that such thoughts include “something more than the likeness of that thing” (AT VII 37; CSM II 25–26). A person can accordingly sense cold, fear a lion, assent to a proposition, exercise the will, compare genus with species, grasp an eternal truth, or entertain the thought of nothing. All of these are genuine forms or contents of cognition, but it does not follow that every such determination of thought possesses objective reality.¹ Nor does the fact that something is formally an actual mode of thought establish that it is also objectively present as something represented.

Without this distinction, two different features of cognition can easily be assimilated. One is the formal actuality of the mental episode together with its phenomenal, affective, volitional, judicative, and conceptual determinations. The other is the presence within that episode of something represented with the ontological status Descartes measures in degrees of objective reality. In the Second Replies, Descartes defines the objective reality of an idea in terms of the “being of the thing” represented by the idea insofar as it is in the idea (AT VII 161; CSM II 113). Treating every determinate or intelligible content as objectively real therefore obscures the difference between the formal actuality and other determinations of a cognition and the objectively real representational content by which a representatum (item represented) is present as represented. It consequently makes it difficult to explain the status of sensations, common notions, eternal truths, second-order classifications, privative contents such as the idea of nothing, and other complex cognitions.

The following sections develop an account of Cartesian objective reality at the level of constituent content. The aim is not to deny that broad and complex Cartesian thoughts can contain objective reality. Descartes’s own distinction between ideas in the strict sense and thoughts that add willing, fearing, affirming, denying, or other forms supports the possibility that a broader cognitive episode can contain an idea without every additional determination of that episode thereby becoming objectively real (AT VII 37; CSM II 25–26). The aim is instead to identify more precisely where within such thoughts objective reality resides, what kinds of content do not themselves contribute it, and how the ontological status of an OR-bearing representatum fixes the degree of objective reality borne by that same content. An ontologically eligible representatum makes the content OR-bearing at the degree appropriate to what is represented.

Why the Whole-Idea Question Is Too Coarse-Grained

The question “Which ideas have objective reality?” treats an idea as though all of its cognitively significant content must stand or fall together with respect to objective reality. That assumption is unwarranted. Cartesian cognition can be structurally heterogeneous. A single conscious episode may contain an OR-bearing representation together with an emotion, an act of will, a judgment, phenomenal qualities, or higher-order conceptual structure. The fact that these elements occur together within one episode does not show that they share the same representational or ontological status.

This point becomes particularly important once the distinction between strict and broad ideas is introduced. A broad Cartesian thought such as fearing, desiring, affirming, denying, or judging can incorporate a strict idea as one of its constituents. The resulting episode can therefore contain objective reality even though the episode considered as fear, volition, or judgment is not itself objective reality. Accordingly, the Restriction Thesis should not be formulated merely as the claim that only strict ideas possess objective reality. That formulation remains too coarse-grained because a broad cognition can contain an OR-bearing strict-idea component.

The more precise thesis restricts objective reality to a certain kind of content within cognition. Some content represents a representatum in the technical Cartesian sense. Other content may merely be consciously instantiated, phenomenally presented, intellectually grasped, asserted, desired, feared, or conceptually organized. The first kind can bear objective reality. The latter kinds do not acquire objective reality merely by occurring alongside it.

Descartes’s own practice of attributing objective reality to ideas as wholes is compatible with this component-level analysis. When he says that ideas representing substances contain more objective reality than ideas representing modes or accidents, he is considering those ideas precisely insofar as they represent their representata (AT VII 40; CSM II 28). In a strict idea, the OR-bearing representation is the content in virtue of which the idea represents its representatum. In a broader cognition, that strict representational content can occur together with affective, volitional, judicative, phenomenal, or other determinations that contribute no objective reality of their own.

Two Different Ways of Restricting Objective Reality

There are two importantly different ways of interpreting the restriction on objective reality. The first might be called a Privileged Subject-Matter Thesis. According to this approach, ideas possess objective reality when their subject matter consists of certain privileged kinds of things, paradigmatically substances, principal attributes, true and immutable natures or essences, and modes. On this view, the ontological category of what the cognition concerns largely determines whether the cognition possesses objective reality.

The second approach is a Component-Level Restriction Thesis. According to it, objective reality belongs only to that content within cognition that internally represents an ontologically rankable representatum. The fact that a cognition concerns a substance, nature, or mode is not by itself sufficient. Nor is it sufficient that the cognition be determinate, conscious, intelligible, or intentionally directed toward something in an ordinary sense. There must be a specifically representational component that makes the representatum present in the idea as represented.

A useful positive test follows from Descartes’s characterization of an idea as involving the “likeness of that thing” (AT VII 37; CSM II 25–26) and of objective reality as the “being of the thing” represented insofar as it is in the idea (AT VII 161; CSM II 113). Content is OR-bearing when an actual or possible substance, attribute, mode, or genuine nature or essence is internally present in the cognition as what is represented, rather than merely being felt, willed, affirmed, denied, compared, classified, or otherwise mentally instantiated.

The difference is therefore between making objective reality depend primarily upon the topic of cognition and making it depend upon the representational function performed by some content within cognition. The first treats the cognition’s concerning the right kind of thing as sufficient. The second requires an ontologically eligible item to be internally present within the cognition as a represented representatum.

The Representatum Determines Both Objective Reality and Its Rank

The privileged subject-matter approach risks inferring objective reality from ontological classification alone. It treats the apparent subject matter’s membership in a Cartesian ontological category as sufficient for the corresponding cognition to possess objective reality. But ontological classification cannot itself establish that the item is internally present as represented in the relevant technical sense.

An ontologically eligible representatum determines both the presence and the degree of objective reality in the content that represents it. If a mode is internally represented as a representatum, the corresponding content is OR-bearing at the rank appropriate to a mode. If a finite substance is represented, the content bears the objective reality appropriate to a finite substance. If God is represented as infinite substance, the corresponding objective reality is infinite. The same representatum that makes the content OR-bearing fixes its degree according to the ontological status of what is represented.

Objective-reality membership and objective-reality rank are therefore distinct aspects of the same representational content, neither logically prior to the other. The fact that something can be classified as a substance, principal attribute, nature, essence, or mode does not establish that it is functioning as a representatum within the cognition under consideration.

Objective-Reality Membership and Objective-Reality Rank

Objective-reality membership and objective-reality rank are distinct but inseparable in OR-bearing content. Content that internally represents an ontologically eligible representatum possesses objective reality, and its degree corresponds to the ontological status of that same representatum.

These features should not be conflated. A formally occurring volition is a mode of a thinking substance. Modes occupy a determinate place within Cartesian ontology. Yet it does not follow that the occurring volition possesses objective reality. Its being a mode determines its formal ontological status as an actual modification of mind. It does not establish that the mind is internally representing that volition as a representatum.

By contrast, if one forms an idea representing another person’s volition, the represented volition can itself function as a representatum. In that case the representation bears the degree of objective reality appropriate to a mode. Thus the same kind of entity can be formally instantiated in one cognition and objectively represented in another. Its ontological category remains the same while its representational role changes.

Formal Instantiation Does Not Entail Objective Reality

The distinction is especially clear with intellectual modes such as doubting and willing. Suppose a person is presently doubting whether a proposition is true. The doubt is formally actual as a modification of the thinking substance. Nothing further follows concerning objective reality. The occurrence of the mental mode does not require that the thinker also contain an internal representation of doubt as a distinct representatum.

Now suppose the same person thinks about another person’s doubt. In this second case doubt can itself become the object represented. A mode that was formally instantiated in the first case is objectively represented in the second. Consequently, formal reality and objective reality cannot be inferred from one another merely because both ultimately concern the same ontological category.

This provides a particularly important test for theories according to which every idea of a simple nature must contain objective reality. If doubt or volition counts as a simple nature, their formal occurrence as acts of thinking does not automatically generate a second, objectively real representation of the same mental mode. Simple-naturehood therefore cannot by itself be sufficient for OR-bearing status.

Mixed Cognitions and the Case of Fearing a Lion

Mixed cognitions provide perhaps the clearest reason for locating objective reality at the level of content rather than whole mental episodes. Suppose someone fears a lion. The cognition can include an internal representation of the lion, the affective state of fear, bodily sensations, an assessment of danger, and an intention to flee.

The lion representation can bear objective reality because it internally represents an ontologically rankable representatum. The fear does not thereby become objective reality. Nor do the unpleasant bodily phenomenology, the act of judging, or the impulse to flee acquire objective reality merely because they occur in a cognition whose intentional focus is the lion.

This case demonstrates why the Restriction Thesis cannot be expressed adequately as “only strict ideas have objective reality.” The broad mental episode of fearing the lion contains objective reality insofar as it incorporates an OR-bearing representation of the lion. The relevant restriction therefore concerns which constituent content qualifies as objective reality, not simply which complete mental episodes can be labeled strict ideas.

Intentional Directedness and Ordinary Aboutness Are Insufficient

The component-level analysis also blocks an inference from ordinary aboutness to objective reality. A thought can be “about” something in several different senses. Fear can be about a lion. A sensation can be described as being of cold. A judgment can concern a proposition. A classificatory thought can be about the relation between genus and species. None of these descriptions by itself establishes that the relevant content contains a Cartesian representatum possessing objective reality.

Objective reality therefore cannot be identified merely with intentional directedness. DTOI requires a stronger representational relation: the internal presence of a representatum as represented in a strict idea. Ordinary intentionality can accompany such representation, but it can also occur in modes of cognition whose determinate content does not itself qualify as objective reality.

Phenomenal Presentation Does Not Entail Objective Reality

The distinction becomes particularly important in the case of sensation. Consider a sensation of cold. Phenomenal coolness can be consciously presented with considerable determinacy. A subject can discriminate slight coolness from intense cold, recognize changes in its phenomenal character, and attend directly to what the experience feels like.

None of this entails that phenomenal coolness constitutes objectively real representational content. Phenomenal presentation is a genuine determination of consciousness, but DTOI distinguishes presentation from internal representation. A cold sensation can therefore possess phenomenal content while containing no corresponding OR-bearing representatum of cold. The cognition is not empty, meaningless, or indeterminate. It simply contains a kind of determinate content different from objective reality.

This distinction also bears directly on material falsity. A sensation of cold can be phenomenally determinate without containing positive OR-bearing coldness, while nevertheless furnishing content that can present, or provide matter for judging, cold as if a positive bodily quality corresponding to the sensation existed in the body. The absence of positive objective reality does not make the sensation cognitively empty; it helps explain how the sensation can provide matter for error without itself containing an objectively real secondary quality.

This example is important because it shows why objective reality cannot be equated with whatever is consciously given. Conscious awareness is a condition for occurrent Cartesian thought, but conscious givenness does not determine the representational ontology of everything that appears within consciousness.

Conceptual Determinacy Does Not Entail Objective Reality

A parallel point applies to intellectual and conceptual content. A cognition can be highly determinate without thereby containing an ontologically rankable representatum. This matters especially for common notions, higher-order classifications, logical relations, and some eternal truths.

Consider the thought that genus as a predicable category is distinct from species as a predicable category. The cognition is not indeterminate. The thinker can understand the relevant classificatory roles, discriminate them from one another, reason about their relation, and apply them correctly. Yet this conceptual determinacy does not establish that genus and species, considered precisely as second-order classificatory roles, are present as OR-bearing representata.

A theory that moves directly from intelligibility to objective reality therefore overgenerates OR. The relevant inference fails: because some content can be distinctly conceptualized, it does not follow that the content possesses the kind of ontologically rankable representational being Descartes attributes to a representatum in a strict idea.

The Idea of Nothing and Content Without Objective Reality

The idea of nothing provides an especially clear example of why conceptual content cannot simply be identified with objective reality. A thinker can distinguish nothing from something, absence from presence, and nonbeing from finite being. The cognition therefore has conceptual determination.

But nothing cannot possess a positive degree of objective reality. There is no positive ontologically rankable representatum corresponding to nothing whose objective reality must be assigned a place within the hierarchy of modes, finite substances, and infinite substance. The idea of nothing therefore demonstrates directly that conceptual determinacy can occur without positive objective reality.

This result reinforces the component-level Restriction Thesis. Determinate cognition is a broader category than OR-bearing representation. Objective reality marks one specific kind of content within the broader field of Cartesian thought.

Why Ideas of Simple Natures Do Not Automatically Contain Objective Reality

The same distinction bears directly on Cartesian simple natures. The fact that a content is intellectually primitive, irreducible in analysis, innate, clear, distinct, or necessary does not by itself establish that every cognition of that content possesses objective reality. Simple-naturehood concerns the cognitive or epistemological status of what is apprehended. Objective reality concerns a particular representational status within an idea. These classifications therefore operate along different dimensions.

Some simple natures are strong candidates for OR-bearing representation. Extension can be represented as the principal attribute or nature of body. Shape and motion can be represented as modes of extension. When these function as representata within strict ideas, their corresponding content can bear objective reality.

But nothing follows from this concerning every simple nature or every cognition in which a simple nature figures. If doubt or volition is formally instantiated as an occurrent mental mode, no objective reality follows merely from that occurrence. If existence, unity, or some common notion is intellectually grasped, its conceptual determinacy does not itself establish an OR-bearing representatum. Accordingly, simple-naturehood is neither sufficient for objective reality nor the metaphysical ground of objective reality.

The correct conclusion is therefore not that ideas of simple natures lack objective reality. Some plainly can possess it. A cognition of a simple nature contains objective reality insofar as the simple nature is internally represented as an ontologically rankable representatum. Its status as a simple nature does not itself perform that representational work.

First-Order Representata and Second-Order Conceptual Content

The component-level analysis also clarifies how a single cognition can combine first-order OR-bearing content with second-order non-OR content. Suppose someone thinks that triangle is a species falling under the genus polygon. The cognition can include a representation of triangularity and a representation of polygonality while also including the classificatory relation under which one is treated as species and the other as genus.

The geometrical contents may qualify as OR-bearing representations of true and immutable natures. It does not follow that the second-order classificatory structure itself possesses objective reality. The fact that the whole thought contains objective reality therefore cannot establish that every determinate constituent of the thought is objectively real.

This is a particularly clear instance of why objective reality must be assigned component by component. The same cognition can simultaneously contain first-order representation and higher-order conceptual organization without assimilating the latter to the former.

The Idea of God and the Importance of Isolating the OR-Bearing Component

The idea of God provides an especially important application because its objective-reality rank is infinite. Suppose a cognition of God occurs together with awe, fear, worship, assent, or desire. The broader mental episode can contain many determinations besides the internal representation of God.

The infinite amount of objective reality belongs to the OR-bearing representation of God as infinite substance. It does not follow that the accompanying awe, fear, judgment, or volition becomes infinitely objectively real. These additional determinations remain formally actual features of the finite mental episode without thereby sharing the objective-reality rank of the God-representatum.

This makes the component-level analysis especially important for the Third Meditation causal argument. The causal requirement is indexed to the objective-reality rank of the OR-bearing representation, not to every determination occurring within the mental episode in which that representation is embedded.

A Refined Formulation of the Restriction Thesis

The preceding analysis supports the following formulation:

Restriction Thesis: Objective reality is not conferred by consciousness, phenomenal presentation, conceptual determinacy, intentional directedness, formal actuality, intellectual intelligibility, or merely by a cognition’s concerning an ontologically rankable item. Objective reality consists only in that component of cognition by which an ontologically rankable representatum is internally present as represented.

This formulation separates meaningful or determinate cognitive content from the narrower domain of objective reality. A cognition can contain rich phenomenal, conceptual, affective, volitional, or classificatory content without all such content being OR-bearing. It also rejects interpretations on which every determinate content of thought acquires objective reality merely because it is conscious, intelligible, intentionally directed, or formally instantiated.

The Mixed-Content Corollary

A further consequence should be stated explicitly:

Mixed-Content Corollary: The fact that a cognition contains objective reality does not imply that every determinate constituent of that cognition contributes objective reality.

This corollary explains why fear does not acquire objective reality from an accompanying lion representation, why phenomenal coolness need not acquire objective reality merely because it occurs in a sensation ordinarily described as being of cold, why second-order classificatory structure does not acquire objective reality merely because it accompanies representations of first-order natures, and why an act of willing does not acquire objective reality merely because it is formally instantiated as a mode of thought.

The distinction can be summarized as follows:

Content within cognition	OR-bearing?	Objective-reality rank or status
Representation of shape, motion, or another genuine mode	Yes	Mode-level objective reality
Representation of a finite mind or finite body	Yes	Finite-substance objective reality
Representation of God as infinite substance	Yes	Infinite objective reality
Representation of a true and immutable geometrical nature	Yes	Objective reality appropriate to the represented nature or essence
Fear, desire, willing, affirming, or denying considered merely as occurring determinations	No	No objective reality of their own
Phenomenal coolness considered merely as sensation	No	No objective reality of its own
Doubt or volition considered merely as a formally occurring mental mode	No	No objective reality of its own
Second-order genus/species classificatory structure	No additional OR	No objective reality of its own beyond any OR-bearing representations contained in the cognition
Idea of nothing	No positive OR	No positive objective-reality rank

From an Object-Selection Theory to a Content-Function Theory of Objective Reality

The deepest difference between the two approaches can be characterized as a shift from an object-selection theory to a content-function theory of objective reality. An object-selection theory asks which kinds of things are privileged enough that ideas concerning them possess objective reality. A content-function theory asks which component of cognition actually performs the Cartesian representational function of making a representatum objectively present.

The latter approach is more discriminating because the same ontological category can appear under different cognitive conditions. A mode can be formally instantiated without being represented. It can also become the representatum of another idea. A true and immutable nature can be internally represented with objective reality while a higher-order classification under which the thinker organizes it need not itself acquire objective reality. Phenomenal content can be consciously present without constituting an internal representation of any ontologically rankable item.

When an ontologically eligible item is internally present as a representatum, the corresponding content is OR-bearing at the degree appropriate to that item’s ontological status. The ontological categories do not by themselves determine which aspects of consciousness are representational. The component-level Restriction Thesis preserves this difference between the formal ontological status of a mental determination and the objective reality borne by representational content.

Conclusions

The question “Which ideas have objective reality?” is not false, but it is too coarse-grained to serve as the fundamental question for DTOI. It encourages the assignment of objective reality to whole cognitive episodes when Descartes’s theory requires a more discriminating analysis of the different kinds of content that can occur within them.

Within a cognition, objective reality belongs to content that internally represents an ontologically eligible representatum. The same representatum that makes the content OR-bearing fixes its degree of objective reality according to the ontological status of what is represented. A represented mode therefore bears mode-level objective reality, a represented finite substance bears finite-substance objective reality, and God represented as infinite substance bears infinite objective reality.

This account prevents several otherwise tempting conflations. A formally instantiated mode does not acquire objective reality merely because modes are ontologically rankable. A phenomenal presentation does not acquire objective reality merely because it is conscious and determinate. A second-order classificatory relation does not acquire objective reality merely because it is intellectually intelligible. An idea of nothing does not acquire positive objective reality merely because nothing can be conceptually distinguished from something. And an idea of a simple nature does not contain objective reality merely because that nature is epistemically primitive, innate, clear, distinct, or irreducible.

The same analysis explains mixed cognitions. Fearing a lion can contain objective reality because it incorporates an OR-bearing representation of the lion, although the fear itself contributes no objective reality. Worshipping God can contain an internal representation with infinite objective reality without the accompanying awe, volition, or judgment becoming infinitely objectively real. Thinking that triangle is a species of polygon can contain OR-bearing geometrical representations without the second-order genus-species relation itself possessing objective reality.

The resulting Restriction Thesis is therefore a restriction on which content within thought qualifies as objective reality, not merely on which complete mental episodes count as strict ideas and not merely on which kinds of entities can serve as subject matter. Objective reality is the ontologically rankable representational content by which a representatum is internally present as represented. Other content can be fully conscious, determinate, intelligible, phenomenal, formally actual, or conceptually indispensable without thereby becoming objective reality.

This component-level approach preserves two distinctions that DTOI requires throughout Descartes’s theory of ideas: the distinction between objective-reality membership and objective-reality rank, and the distinction between OR-bearing representation and the many other genuine forms of content that can occur within Cartesian cognition. Objective-reality membership and rank are distinct aspects of OR-bearing content, but neither is prior to the other. The presence of objective reality in a cognition therefore does not convert every determination of consciousness into objective reality.

NOTES

1
See my supporting posts, “Condensation: Why Objective Reality Cannot Be Descartes’s Theory Of Thought: Burman, Common Notions, And The Failure Of The Strict Idea Model“ and “Why Objective Reality Cannot Be Universal In Descartes’s Theory Of Ideas: Nothing, Eternal Truths, Sensations, And Fear With Claude Opus 4.6“ amongst others.
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