Descartes Knowledge The question of our existence in reality is a question which philosophers have tackled throughout time. This essay will look at the phrase, cogito ergo sum or I think therefore I am, a phrase brought about by Rene Descartes. This phrase is the backbone of Descartes whole philosophy of our existence in reality. As long as we are thinking things, we exist. When we look at this approach to our existence we must …showed first 75 words of 1101 total…

…showed last 75 words of 1101 total…experience them because they arouse us to wakefulness and therefore are experience while in deep sleep. The introduction of stimuli in deep sleep arouses thoughts in us in order to wake us. Therefore, while in deep sleep we might not remember everything we thought but we are still thinking or else we would probably never wake up. Think about how you wake up at any time and it is obvious that some thought is involved.