... deceive us. He gives the example of dreams. People cannot be sure about whether they are awake or they are sleeping. On the other words, maybe the real life that we live can be an imagination, or that moment, we think that is real, can be a dream. However, Descartes reach to this basic truth, by reaching to idea of the existence. Descartes starts to ask questions on knowledge. He asks, "What do you know?" and his answer is with certainty nothing. If the answer is nothing, we know what we lack of, and by the method that we mentioned, we can reach "indubitable truth". According to Descartes, there is a mind and body distinction. This distinction means that, thinking is something different from physical properties. According to Descartes people can separate their thoughts from their bodies, which means that we cannot deny that we are aware of ourselves. Our ...

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