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Renee Descartes was a French philosopher, probably the greatest philosopher of all time (although [[Kant]], [[Aristotle]] and [[Ayn Rand]] also lay claim to this title).

Rene Descartes was a French philosopher.

Descartes locked himself in a stove and meditated, arriving at the unsurprising conclusion that nothing existed. He then used [[Anselm]]'s proof of the existence of [[God]] to decide that perhaps he wasn't deluded, and perhaps things did exist after all.  He thought the [[soul]] lived in the pineal gland, and when you lift your arm it's just an accident because your brain doesn't control your body, God does.  This "god-robot" theory of consciousness got him into ferocious arguments with [[Hobbes]], but then Hobbes loved a good argument and was usually wrong.

To write his famous ''Meditations on First Philosophy'', Descartes locked himself in a room and thought about existence, arriving at the conclusion that he, as a thinking person, must exist, because even if existence is a delusion, there must be someone to be deluded. However, he was still not sure that the things he perceived exist as well. He used a variant of [[Anselm]]'s proof of the existence of [[God]] to decide that perhaps he wasn't deluded, and perhaps things did exist after all.  He thought the [[soul]] lived in the pineal gland, and when someone does something, it's just an accident because the brain doesn't control the body, God does.  This "god-robot" theory of consciousness got him into ferocious arguments with [[Hobbes]].