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Descartes can¡¦t trust the senses relating to the welfare of the body because of the following cases: First, after a man¡¦s leg is amputated, he still sometimes fells pain on the lost leg. Second, sometimes when a man is suffering dropsy, he still gets the sensation of thirsty. He, then, drinks water and worsens his illness. Third, when a man feels hunger, he eats the food with poison and gets injured. Since these senses are all taught by the ¡§nature of man, Descartes wonders ¡§ how goodness of God doesn¡¦t prevent ¡¥nature,¡¦ this consider, from being deceptive?¡¨ (56) After Descartes carefully observes about how mind be affected the sensations from the brain, which get message from the nerves of the body, he now realizes that most of the sensations are conductive to the maintenance of the hea