Perception and Motivation of Practical Reason in Sadra's Thought; A Reflection on Sadra's Point of View

intellect as a source of knowledge is divided into two theoretical and practical types; the existence of theoretical reason and the role it plays in general perception is accepted by all, but the existence of rational reason( independent of theoretical reason) and its evidence is a challenging and controversial issue .philosophers in this regard are divided into two groups : some deny the existence of practical wisdom from the theoretical reason and a group believes in it .in the second group, a group denied the cognitive function of the practical reason. in contrast, they promised to be partial .in his works, relying on two criteria (ontological and existential actions), mulla sadra considers the existence of practical reason as independent of theoretical reason and through the documents of concepts such as inference, thought, troy, intuition, inspiration, belief and judgment which are servants of perception, proves partial perception for practical reason. some of his phrases are also called motivational functions .in this paper, in addition to presenting a new formulation of sadra " s theory, we have presented a new formulation of sadra " s theory to the dispute between the two mentioned criteria and by using descriptive - analytical method, we have led to this conclusion that the practical reason is independent of the theoretical reason