Key Ideas

1. The Meditations on First Philosophy aim to establish a foundation for knowledge that is beyond doubt. Descartes begins by doubting all his beliefs and searching for foundational truths that cannot be doubted.

2. Descartes argues that the only thing he cannot doubt is his own existence. The famous phrase 'Cogito, ergo sum' ('I think, therefore I am') encapsulates this idea.

3. Descartes seeks to prove the existence of God as a necessary condition for the reliability of clear and distinct perceptions. He argues that clear and distinct perceptions are equivalent to truth, and God, being omni....
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Quiz