Fifth Meditation

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…just a few months after the opening of the college in January 1604. He studied there until 1612, studying classics, logic and traditional Aristotelian philosophy. He also learned mathematics from the books of Clavius. In his Meditations, Descartes tries to discover certain, unquestionable foundations for knowledge. He is searching for absolute certainty, and does this by subjecting everything to doubt. By doing this he reaches the one thing he believes to be certain, which is his existence.