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
Knowing the attributes is enough to reveal a substance
12. Knowledge Sources / A. A Priori Knowledge / 3. Innate Knowledge / a. Innate knowledge
Our thinking about external things doesn't disprove the existence of innate ideas
18. Thought / D. Concepts / 2. Origin of Concepts / c. Nativist concepts
A blind man may still contain the idea of colour
28. God / C. Proofs of Reason / 1. Ontological Proof
Possible existence is a perfection in the idea of a triangle
Necessary existence is a property which is uniquely part of God's essence