Sadra's monistic view in existential analyzing of man

How does Sadra`s existential philosophy analyze human being? The question has been attended to in this paper. This philosophical school when analyzing the existence of human being, has turned all kinds of duality and multiplicity to unity. On Sadra`s philosophical rules like essentiality of existence and its simplicity, unity and analogicity, predication in high degree and low degree of the same being (hamle haqiqat va raqiqat) and inclusiveness of the simple truth (basitul haqiqah kullul al ashya), duality of human soul and body has turned to an essential unity. The multiplicity of the powers of the soul and the variety observed among knowledge, knowing and the known and the duality of origin and existential end have been omitted. In this school immateriality of human soul has been put on such a high level that its duality with active intellect has been disappeared. Generally saying, one can argue that in this school the harmony between human inner soul and outer world has been well pictured. One, therefore, can claim that this mystico-philosophical school, in spite of its intuitional method of study, can be regarded as a demonstrative philosophical thought; because it has regarded demonstrative problems in other philosophical school and has agreed with them methodologically in some way. Though it is in need of a systematical order.