Descartes came to the conclusion that man is a dual creature that both thinks and takes up room in space. Man has thus both a mind and an extended body. St. Augustine and Thomas Aquinas had already said something similar, namely, that man had a body like the animals and a soul like the angels. According to Descartes, the human body is a perfect machine. But man also has a mind which can operate quite independently of the body. The bodily processes do not have the same freedom, they obey their own laws. But what we think with our reason does not happen in the body – it happens in the mind,
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