Ideas from 'Reply to Second 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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11. Knowledge Aims / B. Certain Knowledge / 4. The Cogito
The Cogito is not a syllogism but a self-evident intuition
                        Full Idea: When someone says 'I am thinking, therefore I am, or I exist', he does not deduce existence from thought by means of a syllogism, but recognises it as something self-evident by a simple intuition of the mind.
                        From: René Descartes (Reply to Second Objections [1641], 140)