Ideas from 'Reply to Fifth Objections' by René Descartes [1641], by Theme Structure
[found in 'Philosophical Essays and Correspondence' by Descartes,René (ed/tr Ariew,Roger) [Hackett 2000,0-87220-502-9]].
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9. Objects / B. Unity of Objects / 2. Substance / a. Substance
3626
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Knowing the attributes is enough to reveal a substance
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Full Idea:
I have never thought that anything more is required to reveal a substance than its various attributes.
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From:
René Descartes (Reply to Fifth Objections [1641], 360)
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12. Knowledge Sources / A. A Priori Knowledge / 3. Innate Knowledge / a. Innate knowledge
3630
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Our thinking about external things doesn't disprove the existence of innate ideas
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Full Idea:
You can't prove that Praxiteles never made any statues on the grounds that he did not get from within himself the marble from which he sculpted them.
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From:
René Descartes (Reply to Fifth Objections [1641], 362)
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18. Thought / D. Concepts / 2. Origin of Concepts / c. Nativist concepts
3631
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A blind man may still contain the idea of colour
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Full Idea:
How do you know that there is no idea of colour in a man born blind?
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From:
René Descartes (Reply to Fifth Objections [1641], 363)
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28. God / B. Proving God / 2. Proofs of Reason / a. Ontological Proof
3640
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Possible existence is a perfection in the idea of a triangle
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Full Idea:
Possible existence is a perfection in the idea of a triangle, just as necessary existence is a perfection in the idea of God.
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From:
René Descartes (Reply to Fifth Objections [1641], 383)
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3639
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Necessary existence is a property which is uniquely part of God's essence
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Full Idea:
In the case of God necessary existence is in fact a property in the strictest sense of the term, since it applies to him alone and forms a part of his essence as it does of no other thing
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From:
René Descartes (Reply to Fifth Objections [1641], 383)
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