Reviewing the Question of the Relationship of the Soul and Body

One of the most difficult problems of philosophy is explaining the quality of the relationship of the soul and body. With all researches that have been done about this discussion, it still needs be discussed. At the beginning, the ideas of some philosophers about relationship of the soul and body have been considered in this article. Given to the importance of the idea of Mulla Sadra, his view has been emphasized more and has been proved that his idea, despite some disputes, is the most successful one in solving the problem of the relationship of the soul and body. Then, the nature of the vapory soul and its function in the theory of Mulla Sadra and the rate of the attachment of his view to this idea has been shown. At the end, following issues have been reconsidered: clearing the subject of the discussion, five statements can be given, which the basic pivot of each of them is: relationship, impressing and being impressed, combination of one natural kind from matter and spirit, attachment and management, union. The writer believes that the subject of the dispute is just union and the other kinds are out of discussion; relationship of the principle of cognation with this dispute; and at end, the writer has given a solution for solving this problem on the base of some principles.