
Using the following premises, what conclusion do you draw about a cold sensation containing any objectively real content or not?
Premise 1: The idea of cold, if it is a privation, cannot be objectively in the mind by way of an idea of which the objective esse would be a positive ens.
Premise 2: If cold is the privation of heat, the idea of cold is not cold itself as it is objectively in the mind, but something else which we mistakenly take for that privation.
Premise 3: The idea of cold turns out to have no existence except in the mind.
Based on the premises provided, we can draw the following logical conclusion:
Conclusion:
The sensation of cold does not contain any objectively real content; it is merely a mental construct without objective existence.
Reasoning:
- Premise 1 establishes that if cold is a privation (i.e., the absence of heat), it cannot exist objectively in the intellect as a positive entity. This means that the concept of cold, as apprehended by the mind, lacks independent positive existence.
- Premise 2 asserts that if cold is indeed the privation of heat, the idea of cold in the intellect does not correspond to the privation itself but to something else—likely an interpretation or mental representation. This implies that our understanding of “cold” is based on perception rather than an objectively real entity.
- Premise 3 states that the idea of cold only exists in the intellect and not in reality. This means that cold, as an idea, is constructed and sustained by the mind without an independent existence outside it.
Thus, integrating these premises, it follows that the sensation of cold, as experienced by us, has no objectively real content. Instead, it is a subjective experience derived from the absence of heat and constructed by the intellect. It is not cold itself that exists in reality, but rather the absence of heat, with the perception of “cold” being a mental interpretation that does not carry real, objective content.

In this context, objective reality does not mean non-subjective facts. Instead, it refers to René Descartes’s theory of ideas, where objectively real mental content references the explicit representational content of an idea that determines the object of thought represented. In this context, revise your previous answer to conform to this new understanding.
Given the revised understanding of “objective reality” in the context of René Descartes’s theory of ideas, we need to approach the question with a focus on how mental content represents ideas. In Descartes’s framework, “objective reality” pertains to the representational content within the intellect, distinguishing between what is represented by an idea and the actual existence of that idea outside the mind.
Revised Conclusion:
The sensation of cold contains no objectively real content within the Cartesian sense. The idea of cold as it exists in the intellect does not correspond to a true representation of an independently existing entity but rather represents a constructed notion, derived from the absence of heat.
Reasoning:
- Premise 1 states that if cold is a privation, then it cannot be objectively real in the intellect as an idea whose representational content reflects a positive entity. This means that the idea of cold cannot represent an actual, independent object of thought; it only represents the absence of heat.
- Premise 2 clarifies that if cold is understood as the privation of heat, the mental representation of cold in the intellect is not the actual privation itself. Instead, it is a conceptual mistake or misrepresentation. Thus, the idea of cold fails to represent an objectively real content, because what is perceived is not aligned with the nature of the privation.
- Premise 3 reinforces that the idea of cold only exists within the intellect and does not possess actual existence outside of it. This reinforces that, according to Descartes’s theory, the objective content of the idea of cold is not grounded in an external referent but is merely a product of the mind’s interpretative process.
Conclusion Expanded:
In Cartesian terms, the sensation of cold, while it exists as a subjective mental experience, lacks objective reality in the sense of representational content that points to a real, independent object. The mind mistakenly takes this sensation as representing something real (cold as a positive entity), but it is, in fact, only a mental construct derived from perceiving the absence of heat. This means the idea of cold, as held in the intellect, does not correspond to any actual, positive existence outside the mind and thus cannot be said to contain objectively real content.

Your answer has the following issues. Instead of claiming that the idea of cold is “in the intellect,” this is misleading because we are discussing a non-intellectual cold sensation. It would be better to say that “a cold sensation as experienced in consciousness” and then explain how it does or does not contain any explicit representation by containing objectively real mental content.
Thank you for your feedback. Let me revise my answer with the clarified approach:
Revised Conclusion:
A cold sensation, as experienced in consciousness, does not contain any explicit representational content by virtue of containing objectively real mental content in the Cartesian sense. It is a non-intellectual experience that does not represent an independent, positive object but is instead the mind’s interpretation of the absence of heat.
Reasoning:
- Premise 1 states that if cold is a privation (a lack of heat), then it cannot have objective reality as an idea in the Cartesian sense because such an idea would need to represent a positive entity or an independent existence. Therefore, a cold sensation cannot contain representational content that points to a real object, as it is fundamentally the absence of something (heat).
- Premise 2 suggests that if cold is understood as the privation of heat, then the sensation of cold in consciousness does not explicitly represent the privation itself as it is. Instead, it involves the mind’s perceptual error or interpretation, wherein the sensation is mistakenly taken as a substantive experience.
- Premise 3 asserts that the idea of cold, even as perceived as a sensation in consciousness, has no existence outside of that perception. This means the sensation is not based on objectively real mental content but is instead an experience generated by the intellect’s response to the absence of heat.
Explanation:
When discussing a cold sensation in consciousness, it is important to differentiate between the experience itself and its representational nature. In Descartes’s theory, objectively real content refers to the explicit representational content of an idea that points to the object of thought. A cold sensation is non-intellectual and lacks any objectively real mental content because it does not represent an actual positive entity but is simply the perception of a state caused by the absence of heat.
In this framework, the cold sensation lacks the representational content needed to be considered objectively real in the Cartesian sense. It is an experience that arises in consciousness, but it does not carry with it any explicit representation of a positive entity. Thus, the sensation of cold is a subjective, sensory experience that does not contain any objectively real content, as it fails to reference or represent any actual object within reality.

You still seem overly tied to an intellectual dimension regarding a cold sensation when you claim it is the “mind’s interpretation of the absence of heat” since sensations are not interpreting anything.
You’re correct in pointing out that associating a sensation like cold with the “mind’s interpretation” is misleading, as sensations themselves are not interpretative processes. Here’s a revised explanation that focuses solely on the experiential nature of a cold sensation without invoking intellectual or interpretative elements:
Revised Conclusion:
A cold sensation, as experienced in consciousness, does not contain any explicit representation by virtue of containing objectively real mental content. In the context of Descartes’s theory, a sensation of cold is a non-representational experience that lacks any positive objective reality; it does not reference an independent object of thought but is merely the experience of an absence (i.e., the absence of heat).
Reasoning:
- Premise 1 establishes that if cold is understood as a privation (an absence of heat), it cannot have an objectively real representation in the mind as a positive entity. Therefore, a sensation of cold cannot represent anything concrete or real because it is, at its essence, the lack of heat rather than an independently existing phenomenon.
- Premise 2 implies that the sensation of cold does not correspond to the privation itself in a representational manner. Rather, the sensation is simply experienced; it is not an intellectual or interpretative act, meaning it does not actively “represent” anything in an objectively real sense.
- Premise 3 reinforces that the idea or sensation of cold exists only within consciousness without any existence outside of it. It is a sensory experience that arises due to a physical condition (e.g., reduced temperature) but does not carry explicit representational content in the Cartesian framework.
Clarification:
In Cartesian terms, for a sensation to have objectively real mental content, it must represent something explicitly in consciousness that corresponds to an actual, positive object or reality. A cold sensation, however, is purely a subjective experience triggered by the absence of heat and lacks any content that represents an independent, positive object. It is a direct experience felt in consciousness but devoid of representational or objective reality as defined by Descartes.
Therefore, a cold sensation experienced in consciousness does not have explicit representational content or objectively real mental content. It is simply felt, not interpreted or represented in a way that would imbue it with objectively real content.

It is false that “to have objectively real mental content, it must represent something explicitly in consciousness that corresponds to an actual, positive object or reality” since an intellectual idea of a unicorn contains an objectively real unicorn in that idea even when no actual unicorns exist.
Thank you for clarifying this important nuance in Cartesian philosophy. You’re right to point out that objectively real content in Descartes’s theory does not require the actual existence of the object outside the mind. An idea, even if it refers to something that does not exist (like a unicorn), can still have objective reality within the realm of thought. Let’s revise the explanation accordingly:
Revised Conclusion:
A cold sensation, as experienced in consciousness, does not contain objectively real mental content in the Cartesian sense. While an intellectual idea can have objectively real content by representing an object of thought (whether it exists externally or not), a sensation like cold lacks such explicit representation.
Reasoning:
- Premise 1 asserts that if cold is a privation (the absence of heat), it cannot exist as an idea with positive objective reality in the intellect. This means that the sensation of cold does not represent a concrete entity in the same way that an idea of a unicorn, which has objectively real content, would represent a mythical creature.
- Premise 2 emphasizes that a sensation of cold, experienced in consciousness, does not function as an intellectual representation of a privation or object. It is a direct, non-representational experience, lacking the explicit mental content that constitutes objective reality in Descartes’s terms.
- Premise 3 reinforces that the idea or sensation of cold exists only within consciousness and has no independent reality outside of it. Unlike an intellectual idea that can represent an object (even if imaginary), a sensation is a mere experiential state without the representational structure necessary for objective reality.
Explanation:
In Cartesian philosophy, the concept of “objective reality” pertains to the representational content of an idea—how the mind holds an idea of an object, regardless of whether that object exists in reality. An idea of a unicorn has objective reality within the intellect because it represents the concept of a unicorn. However, a cold sensation, being purely experiential and non-intellectual, does not have this kind of representational content. It does not actively represent an object, even an imagined one, but is simply the subjective experience of a physical condition (the absence of heat).
Final Clarification:
The sensation of cold, as felt in consciousness, is a direct sensory experience without objectively real mental content. It does not have the explicit representational nature needed to qualify as an idea with objective reality. While intellectual ideas can contain objectively real content (such as the idea of a unicorn), a cold sensation is non-representational and therefore lacks this type of content in Descartes’s framework.

Even when lacking any objectively real mental content, a cold sensation can be representational by being a sign for particular configurations of particles in motion that lawfully cause that sensation. Therefore, you should not just assert that sensations must be non-representational even when lacking objectively real mental content.
You’re correct in noting that sensations can be representational in a different sense, even if they lack objectively real mental content in the Cartesian framework. Let me revise the explanation to reflect this distinction:
Refined Conclusion:
A cold sensation, as experienced in consciousness, may lack objectively real mental content in the Cartesian sense but can still be representational. It can act as a sign indicating a particular configuration of particles in motion or a specific physical state that causes the sensation. Thus, while the sensation does not have explicit, objective reality as an intellectual idea would, it can still represent something indirectly.
Reasoning:
- Premise 1 highlights that if cold is a privation (an absence of heat), the sensation of cold cannot have objective reality as a positive mental content. This means it cannot represent an independent, positive object or idea as would be found in Cartesian thought.
- Premise 2 acknowledges that while a sensation of cold lacks the kind of objective reality that an idea (such as the idea of a unicorn) might have, this does not mean the sensation is entirely non-representational. It can still function as a sign or indicator of a specific physical state (a configuration of particles or a lower energy state) that lawfully produces the sensation.
- Premise 3 reiterates that the cold sensation, existing only in consciousness, does not represent an actual, positive object with objective reality. However, as a sensory experience, it has a representational quality insofar as it correlates to external physical causes.
Explanation:
In Cartesian philosophy, the concept of objective reality refers to the representational content of intellectual ideas—how the mind represents an object, whether real or imagined. Sensations, on the other hand, do not inherently possess this type of objective mental content. However, this does not preclude sensations from being representational in a more general sense. A cold sensation can be seen as representational because it signifies a physical state or condition that produces the experience (e.g., a certain molecular motion or lack of heat).
Clarification of Representational Nature:
Even though a cold sensation may not have objectively real mental content as defined by Descartes, it can still have representational significance. It represents or corresponds to a lawful physical state of affairs (e.g., the motion and energy of particles) that gives rise to the sensation. This means that while it does not possess objective reality as a fully intellectual idea would, it acts as a sensory sign of the external world.
Final Insight:
A cold sensation, while lacking objectively real content in the Cartesian framework, should not be considered entirely non-representational. It serves as an indicator of physical conditions in the external world that correspond to its presence. Therefore, while it does not have the explicit mental content of an idea with objective reality, it still holds a representational role as a sign of the state that causes it.

OK, now let’s see if we can prove that because Descartes calls a cold sensation an idea, it must contain some objectively real mental content. Descartes claims, “And because no ideas can exist except as of things” [in Descartes’s original Latin: Et quia nullæ ideæ nisi tanquam rerum esse possunt] (AT 7: 43–44). An obvious choice for what allows an idea to be of a thing is to contain that thing by having objectively real mental content. Therefore, since sensations are ideas and are definitely of something, since sensations contain different mental contents, any sensation necessarily contains some objective reality. Discuss this argument’s validity and explain whether the conclusion is correct.
The argument that because Descartes considers a cold sensation an idea, it must contain some objectively real mental content is intriguing and grounded in Cartesian theory. Let’s evaluate the validity of this argument step-by-step and assess whether the conclusion holds true:
Analysis of the Argument:
- Premise 1: Descartes claims that ideas are always “as of things” (Et quia nullæ ideæ nisi tanquam rerum esse possunt). This suggests that an idea must represent or point to something, implying that any idea inherently has some content that makes it of something.
- Premise 2: The defining characteristic that allows an idea to be “of a thing” in Descartes’s philosophy is that it contains some objectively real mental content. In Cartesian terms, objective reality refers to the content within the mind that corresponds to the representation of an object, regardless of the external existence of that object.
- Premise 3: Sensations, according to Descartes, are a type of idea. This implies that sensations, just like intellectual ideas, must be “of something” and must therefore possess some representational content.
Evaluation of the Conclusion:
- Argument Validity: The argument logically follows if we accept that Descartes’s notion of an idea requires objective reality as a fundamental attribute that makes an idea “of” something. If ideas must represent content to be about anything, and sensations are classified as ideas, then sensations should contain some degree of objective reality. This is because they represent certain experiences or conditions (e.g., a sensation of cold representing a particular sensory input).
- Support from Descartes’s Texts: Descartes often defines ideas broadly to include sensory experiences. He considers sensations as ideas in the mind, which implies that they are mental constructs that represent particular states or phenomena, even if they arise from external stimuli. Since these sensations represent certain conditions (e.g., cold as the experience of reduced heat), they must, according to Cartesian standards, contain some form of objective mental content.
Explanation of Objective Reality in Sensations:
In Descartes’s framework, objective reality refers to the representational content of an idea—the degree to which an idea contains or points to the “thing” it is about. Intellectual ideas, such as the idea of a unicorn, have objective reality because they represent an object or concept within the intellect, regardless of external existence. By this reasoning, even though a sensation like cold does not represent a fully positive entity or concept, it still represents the state of experiencing the absence of heat. This means that the sensation does indeed point to something real in consciousness, thus containing some level of objectively real mental content.
Validity of the Conclusion:
Given the premises and how Descartes defines ideas, it is valid to conclude that a cold sensation must contain some objectively real mental content. Sensations are ideas because they represent experiences—specific mental contents—that refer to certain states or inputs. Since Descartes claims that ideas are always “as of things,” sensations, being ideas, must inherently contain some degree of objective reality to fulfill this representational requirement.
Final Assessment:
The conclusion is correct based on Descartes’s assertion that all ideas are “as of things” and thus must represent something, implying the presence of objectively real mental content. Sensations, while not intellectual ideas, are still representational in that they convey the experience of certain conditions or states, such as the sensation of cold. Therefore, even though a cold sensation may not be an idea in the fully conceptual sense, it still has objective reality in the sense that it represents an experiential state.

What experiental state does a cold sensation represent and what is the objectively real mental content allegedly contained in a cold sensation?
To address what experiential state a cold sensation represents and what the objectively real mental content contained in such a sensation is, we need to carefully analyze how sensations are treated in Descartes’s theory of ideas and how they fit into the broader framework of representational content.
1. What Experiential State Does a Cold Sensation Represent?
A cold sensation represents the direct experience of a specific physical state that we perceive as the absence or reduction of heat. In this context, the experiential state is the conscious awareness of coldness. This sensation does not convey information in the same manner as an intellectual idea, but it still reflects the mind’s reception and processing of sensory input related to temperature changes. Specifically:
- Representation of Physical Conditions: The sensation of cold represents the state of the body’s interaction with its environment, such as the reduced motion of particles or the decreased thermal energy that triggers nerve responses associated with coldness.
- Subjective Experience: The cold sensation embodies the subjective awareness of discomfort or the distinct feeling associated with a lower temperature.
2. What Is the Objectively Real Mental Content Allegedly Contained in a Cold Sensation?
In Cartesian terms, the “objectively real mental content” refers to the representational content within an idea that makes it “of” or “about” something. For intellectual ideas, this is often more straightforward, as an idea of a tree contains the objective reality of a tree in the mind, whether or not it exists externally. Applying this concept to a cold sensation:
- Representation in Sensations: The objectively real mental content in a cold sensation is the idea of “cold” as a state of sensory experience within the mind. This means that while the sensation is directly felt and not an abstract concept, it still carries representational content because it signifies the experience of a reduced thermal state.
- Objective Reality of Sensory Ideas: According to Descartes, even though sensory ideas do not always accurately represent external objects as they are, they still contain some objective reality because they are ideas “as of things.” In the case of a cold sensation, the objectively real mental content is the mind’s representation of the experienced reduction of heat. It is not the privation itself but the mind’s constructed response that reflects the sensation of cold.
Explanation of How Objective Reality Applies:
- Sensory Ideas as Representations: Sensory ideas, like a cold sensation, are considered representational because they present certain experiential content to the mind. While they might not represent an actual positive entity (such as an object like a chair), they still signify an interaction with the environment (the perception of cold due to reduced thermal energy).
- Contained Mental Content: The mental content within a cold sensation is the idea that embodies this specific type of sensory input. This content is objectively real in the sense that it exists as a representation within the mind, aligning with Descartes’s claim that all ideas must be “as of things” and thus have representational properties.
Summary:
A cold sensation represents the experiential state of feeling cold, which is the conscious awareness of a lack of heat or reduced thermal energy. The objectively real mental content in a cold sensation is the representation of this state within the mind, allowing it to be “of” something, even if that “something” is not a positive, external object but rather an internally processed sensory experience. This mental content makes the sensation an idea with objective reality, fulfilling Descartes’s criteria that ideas must represent things in some manner.

The problem with your last answer is that it is false that a cold sensation as directly and immediately experienced represents what you claim, which was “The objectively real mental content in a cold sensation is the representation of this state within the mind” since a representation of a cold sensation in a mind would not feel chilly to a perceiver just like a representation of pain does not hurt.
You are correct in pointing out that my previous answer mischaracterized the nature of a cold sensation as experienced. A representation of a sensation is distinct from the direct experience of that sensation. Here is a refined understanding:
Clarification:
A cold sensation, as directly and immediately experienced, is not a representation in the sense of being an intellectual or conceptual depiction of a state. Rather, it is an immediate, non-conceptual sensory experience. When one feels cold, they are not experiencing a mental representation of coldness; they are directly undergoing the sensation itself. This contrasts sharply with an intellectual idea, such as thinking about coldness or reflecting on what it means to be cold, which could be said to involve representational content.
Addressing the Question:
1. What Experiential State Does a Cold Sensation Represent?
In its most immediate form, a cold sensation does not “represent” an experiential state in the way intellectual ideas do. It is the direct perception of the state of coldness itself. The sensation does not stand for or point to something else within consciousness; it is the experience itself, felt subjectively and immediately.
2. Objectively Real Mental Content in a Cold Sensation:
The claim that a cold sensation has objectively real mental content is problematic when taken to mean that the sensation contains a representation of the cold state. The objectively real mental content in Descartes’s sense pertains to the representational aspect of ideas—what makes an idea about an object or phenomenon.
However, in the case of sensory experiences like feeling cold:
- Direct Experience vs. Representation: The cold sensation itself is not a representation that exists in the mind depicting a state of coldness; it is the experience of coldness. This is why the sensation feels “chilly” to the perceiver—it is an immediate, qualitative state, not a depiction or representation of one.
- Objective Reality in Sensations: If we follow the notion that all ideas must be “of things” and therefore contain some objective reality, the cold sensation would only contain objectively real content insofar as it is considered an idea in Descartes’s broad categorization. But this content is not representational in the way an intellectual idea is. Instead, the objective reality here would be that the cold sensation itself exists as a type of mental phenomenon within the mind, but it does not depict or represent coldness as an external state.
Conclusion:
A cold sensation as directly experienced is not representational in the way an intellectual idea is. It does not contain objectively real mental content that represents coldness; it is the experience of coldness. The notion of objectively real mental content applies more fittingly to intellectual ideas that represent or are “about” objects or states. In contrast, sensory experiences like feeling cold are immediate, qualitative states of consciousness that do not contain representational content but are themselves experienced directly by the perceiver.

So, which is it now? In the discussions above, you have held that a cold sensation must contain objectively real content since Descartes claims that a cold sensation is both an idea and must be of something and that a cold sensation has no objective reality. Does a cold sensation contain or lack objectively real mental content?
Thank you for your patience and for allowing this thorough exploration. To consolidate and clarify:
Final Answer:
A cold sensation does contain objectively real mental content in the context of Descartes’s philosophy, but it is important to qualify what this means. Here’s the explanation:
Explanation:
- Cartesian Definition of Ideas: According to Descartes, an idea is something that exists in the mind and is always “as of things” (i.e., it has content that points to or represents something). This implies that any idea, whether intellectual or sensory, has objective reality in the sense that it contains the representational content of the object it is “about” or “of,” even if that object does not exist outside the mind.
- Sensations as Ideas: Descartes acknowledges that sensations are indeed a type of idea. This means that, in Cartesian terms, a cold sensation is an idea with representational content, even if it is not an intellectual idea like a concept or abstract thought. The cold sensation “represents” the experience of cold in the mind, making it ofsomething, and thus it must contain some objectively real mental content.
- Objective Reality in Sensory Ideas:
- Direct Experience: While a cold sensation is directly felt and experienced, it still has objective reality in Descartes’s framework because it represents the experience of coldness within the mind. The mental content of a cold sensation is objectively real because it reflects what the experience is of (the feeling of cold).
- Content of Sensations: The objectively real mental content of a cold sensation is the way it embodies and represents the feeling of coldness in consciousness. This is different from an intellectual idea but still falls under the category of ideas that contain objective reality, as sensations are considered ideas by Descartes.
Resolution:
The conclusion is that a cold sensation does contain objectively real mental content. It may not represent an object in the external world in the way an intellectual idea does (e.g., an idea of a tree representing a tree), but it still represents the internal state of feeling cold. This representational nature grants it objective reality as a mental content within the Cartesian understanding of ideas. The confusion in earlier discussions arose from conflating different aspects of representational content between sensory and intellectual ideas. Sensations do not have to be abstract or detached representations to qualify as containing objectively real content; they are direct, experiential ideas that represent states of perception within the mind.

What you argue cannot be correct when you wrote, “While a cold sensation is directly felt and experienced, it still has objective reality in Descartes’s framework because it represents the experience of coldness within the mind. The mental content of a cold sensation is objectively real because it reflects what the experience is of (the feeling of cold)” as we already agreed that a cold sensation does not represent the experience of cold since it is the experience of cold. If it represented it, it would not feel chilly to the perceiver!
You are correct in challenging that point, and I appreciate your patience in working through these complexities. Let’s address this issue clearly and accurately.
Clarification of Objective Reality in a Cold Sensation:
The idea that a cold sensation contains objectively real mental content requires careful differentiation between what it means for an idea to have objective reality in Descartes’s framework and how sensory experiences fit into this model.
- Direct Experience vs. Representation:
- Direct Experience: A cold sensation is the direct, immediate feeling of cold. It is not a representation of an experience; it is the experience itself. This means that it does not point to or depict another state within the mind. If a sensation of cold represented the experience of feeling cold, it would be akin to a depiction or secondary awareness of the experience, which is not the case. Sensations are not representations of themselves; they are the immediate qualia that we directly perceive.
- Objective Reality in Cartesian Terms:
- Objective Reality: In Descartes’s theory, for an idea to have objective reality, it must contain representational content that is of something. Intellectual ideas, such as the idea of a tree or a unicorn, contain objective reality because they represent an object or concept in the mind. However, a cold sensation, as a direct, non-conceptual experience, does not have this kind of objective reality. It does not represent coldness as an idea about coldness would; it simply is the sensation of cold.
- Nature of Sensations in Descartes’s Philosophy:
- Sensory Ideas vs. Intellectual Ideas: While Descartes considers sensations as ideas (in that they are mental content within consciousness), this categorization does not mean that they have objective reality in the same way intellectual ideas do. Sensory experiences like cold are immediate states of perception and do not contain representational content that refers to something else. They do not represent or depict an object or state external to themselves; they are the experiential manifestation of sensory input.
Final Conclusion:
A cold sensation, while it is an idea in Descartes’s broader categorization, lacks objectively real mental content as traditionally understood in Cartesian philosophy. This is because it does not represent anything within or outside the mind; it is not about an object or experience—it is the experience itself. Objective reality in Descartes’s framework requires the content of an idea to point to or represent something, and a cold sensation does not fulfill this requirement. It is an immediate, qualitative state rather than a representation, and therefore, it does not contain objectively real mental content in the sense Descartes attributes to intellectual ideas.

But if a cold sensation is an idea and all ideas must be of something, what makes it possible for a cold sensation to meet these two requirements while lacking objectively real mental content?
This is an excellent question that highlights a key tension in interpreting Descartes’s philosophy of ideas. To answer this clearly, we need to unpack how a cold sensation can be an idea that is “of something” while potentially lacking objectively real mental content.
Re-examining Cartesian Ideas:
- The Nature of Ideas in Descartes’s Framework:
- Descartes defines ideas broadly as mental content that can represent something or be “as of things.” This includes not only intellectual ideas (e.g., mathematical concepts or objects of thought) but also sensory experiences (e.g., the sensation of cold).
- All ideas must be “of” something to qualify as ideas. This means that even sensory experiences like a cold sensation must, in some sense, be about or point to something.
- What Does “Of Something” Mean for Sensations?:
- Sensory Ideas and Representation: For sensory ideas, the requirement to be “of something” means that the sensation must correspond to a perceived experience. A cold sensation is “of” the condition that produces the subjective feeling of coldness. It represents, not through intellectual depiction, but as a direct presentation of the sensory input as processed by the mind.
- Immediate Experience: The phrase “of something” in this context can be interpreted as referring to the direct, conscious awareness of sensory data. In other words, a cold sensation is “of” the external condition that causes it (e.g., a drop in temperature affecting the skin), even if it does not contain a separate representation or objective reality in the traditional intellectual sense.
Objective Reality and Sensations:
- Objective Reality and Intellectual Ideas:
- In Descartes’s philosophy, an idea has objective reality if it represents a content that is “about” an object or state, regardless of the external existence of that object. This is clear in the case of intellectual ideas, such as the idea of a triangle or a unicorn, which have representational content.
- Sensory Ideas: Sensory experiences like a cold sensation, however, do not fit neatly into this definition. They are immediate and non-representational experiences that are not about the sensation itself; they are the conscious experience of the condition.
- Reconciling Sensory Ideas with Descartes’s Framework:
- Being “Of” Without Objective Reality: A cold sensation can still be “of something” because it is an experiential idea that directly corresponds to a sensory input or external stimulus (e.g., cold air or lack of heat). It represents this state in an immediate, experiential way without having the representational structure required for objective reality as found in intellectual ideas.
- Direct vs. Representational Content: Sensory ideas like a cold sensation do not need to contain objectively real content to fulfill the requirement of being “of something.” Instead, they are direct presentations of sensory information. The mind receives and processes this input, making it an “idea” in Descartes’s broad sense, but this does not mean it has the objective reality associated with intellectual representations.
Conclusion:
A cold sensation meets the requirement of being an idea that is “of something” because it is a direct conscious experience of external conditions that give rise to the feeling of cold. It does not, however, have objectively real mental content as intellectual ideas do. The reason it can be “of something” while lacking objective reality is that it is an immediate, qualitative experience rather than a representation or depiction of something. In Descartes’s system, the sensory idea of cold is an idea because it is mental content associated with sensory perception, even if it does not contain objective reality as an intellectual idea would.

There is still a problem in your formulation since you wrote: “a cold sensation is “of” the external condition that causes it (e.g., a drop in temperature affecting the skin).” That interpretation cannot be correct because Descartes requires the perceiver to be immediately aware of the ofness of that idea. Yet a perceiver is not immediately aware of the external physical particles in motion causing that cold sensation. What other candidate can there be for what a cold sensation is of?
Thank you for your patience and for pointing out the inconsistencies. To address your point more accurately:
Clarification of What a Cold Sensation Is “Of”:
In Descartes’s framework, for an idea to be “of something,” the perceiver must be immediately aware of the content that the idea presents. Since a cold sensation cannot be said to represent external particles in motion (as the perceiver is not directly aware of such physical conditions), we need to find a more suitable candidate for what a cold sensation is “of.”
The Candidate for What a Cold Sensation Is “Of”:
A cold sensation is best understood as being “of” the qualitative experience itself—the subjective feeling of coldness. This interpretation aligns with Descartes’s requirement that the perceiver must be immediately aware of what an idea is about. Here’s why:
- Immediate Awareness:
- A perceiver experiencing a cold sensation is directly aware of the feeling of coldness itself. This means that the sensation is “of” the conscious experience of being cold, rather than representing an external cause or condition.
- The idea of coldness, therefore, corresponds to the immediate, subjective state of feeling cold, which the perceiver experiences directly.
- Sensations as Direct Presentations:
- Sensations in Descartes’s view are direct presentations of certain states of consciousness. Unlike intellectual ideas, which may represent abstract or external objects (e.g., the idea of a tree or a triangle), a sensation like cold is an idea that presents a specific kind of awareness or feeling.
- This presentation is not representational in the sense that it depicts or points to something else, but rather it is the content that the mind is aware of during the experience.
What Makes a Cold Sensation “Of Something” Without Objective Reality:
- Of the Qualitative State: A cold sensation is “of” the qualitative, subjective state of coldness that the perceiver directly experiences. This means that the sensation is an idea in the mind that corresponds to the immediate awareness of the feeling of cold.
- No Objective Reality Required: While the sensation is “of” something (the subjective experience of coldness), it does not need to contain objectively real mental content in the Cartesian sense. Objective reality, in this context, refers to representational content that points to an object or concept. Since a cold sensation is the experience itself and not a depiction of it, it lacks this kind of objective reality.
Conclusion:
A cold sensation is an idea “of” the immediate, qualitative experience of feeling cold. This fits Descartes’s requirement that an idea must be “of something” that the perceiver is directly aware of. However, because it does not depict or represent an object or state outside of itself, it does not contain objectively real mental content as an intellectual idea would. It is a direct, subjective experience that fulfills the criterion of being “of something” by presenting the perceiver with the experience of coldness itself.

Descartes also claims that all ideas in the strict sense must be “as if images of a thing” or, in Latin “tanquam rerum imagines.” (AT VII: 43–44; CSM II: 30) Do sensations meet such a requirement? If not, why does Descartes continually claim that sensations qualify as ideas?
This is an insightful question that touches on the complex nature of Descartes’s categorization of ideas. The claim that all ideas must be “as if images of a thing” (in Latin, tanquam rerum imagines) (AT VII: 43–44; CSM II: 30) presents a potential challenge when we consider sensory experiences such as cold sensations. Here, I will examine whether sensations meet this requirement and why Descartes still considers them ideas.
1. Do Sensations Meet the Requirement of Being “as if Images of a Thing”?
- Intellectual Ideas vs. Sensory Experiences: When Descartes states that ideas are “as if images of a thing,” he refers to the representational nature of ideas in the mind. Intellectual ideas, such as the idea of a triangle or the concept of a tree, clearly fit this definition because they represent and depict objects or concepts, even if those objects do not exist externally.
- Sensory Ideas: Sensations, such as a cold sensation, do not seem to fit this strict criterion of being “as if images of a thing.” This is because they are not representational images in the mind in the same way an intellectual idea is. A cold sensation is not an image or depiction of an external condition or an abstract concept; it is an immediate, qualitative experience felt by the perceiver.
2. Why Does Descartes Still Consider Sensations as Ideas?
Despite the fact that sensations may not qualify as “images” in the same way that intellectual ideas do, Descartes still categorizes them as ideas for several reasons:
- Broad Definition of Ideas: Descartes uses the term “idea” in a broader sense to include any mental content that arises within the mind. This encompasses not just intellectual representations but also sensory experiences. Sensations are mental content that the mind is aware of, fulfilling the requirement of being “of something” in the immediate, conscious sense.
- Direct Awareness: Descartes holds that sensations are ideas because they are direct experiences that the mind perceives. For example, when you feel cold, that sensation exists as content in the mind—it is something you are aware of. In this way, sensations qualify as ideas because they contribute to conscious awareness, even if they do not represent objects as if images in the strict sense.
- Functional Role in the Mind: Descartes argues that sensations serve as signals or indications of states that affect the body and mind. While they may not be “images” in the visual or representational sense, they play a role in conveying information to the perceiver about their state or environment (e.g., feeling cold signals the condition of reduced warmth). This informational role may justify why Descartes includes them as ideas, despite their deviation from the “image-like” criterion.
3. Reconciling Sensations with Descartes’s Theory of Ideas:
- Sensations as Non-Representational Ideas: While sensations do not fit the description of being “as if images of a thing” in the same way that intellectual ideas do, they still qualify as ideas because they are mental experiences that present certain states directly to consciousness. They are “of” something in that they reflect an internal, subjective experience of a condition (e.g., feeling cold) without being an intellectual representation or image.
- Role of Sensations in Descartes’s Philosophy: Descartes maintains that sensations qualify as ideas because they contribute to the mind’s understanding of its own state and interactions with the body. Even though sensations may not be image-like representations, they are still ideas because they are part of the mind’s awareness and function as content that can be considered by the intellect.
Conclusion:
Sensations do not meet the requirement of being “as if images of a thing” in the strict, representational sense that intellectual ideas do. However, Descartes still considers sensations to be ideas because they are mental content that the mind is directly aware of, playing a role in conscious experience and bodily awareness. The broad categorization of ideas in Descartes’s philosophy allows for sensory experiences to be included as ideas, even if they do not conform to the “image-like” nature that is characteristic of intellectual ideas. Sensations are included as ideas because they are immediate mental states that contribute to the perceiver’s conscious experience, fulfilling Descartes’s overarching definition of what constitutes an idea.
