The Application of the Explanation Method in the Political Philosophy according to Mulla Sadra's Theory of Unity within the Very Multiplicity

In this essay, the authors have gone to show what capacities there are in Mulla Sadra's school of philosophy for the methodology of political philosophy, particularly the explanation method. In order to answer this question, the authors have first illustrated the aims and functions of political sciences through a philosophical-analytical method, and then studied the methodological capacities of Sadraian system of metaphysics in each of the functions of political sciences.     Some achievements of this research are as the following: 1- viewing a variety of its conceptual definitions, Mulla Sadra's transcendental philosophy has a good deal of capacity in the methodology of definition of abstract concepts of political philosophy. 2- Having embraced the rational interpretation i.e. suggesting abstract and intellectual meanings for political activities, one should come to propose an interpretation of the same activities as divine action, too. 3- Considering the principle of unity within multiplicity and vice versa in the plurality of causes, a researcher of political philosophy may not only explain the plural aspect of causes, but also their unity one. 4- Due to the rational approach in political philosophy, there is no room for prediction i.e. emperical futurology in that field of knowledge. 5- In the position of political activity assessment, a Muslim researcher is expected to consider the Islamic aims and genuine values in order to propose his assessment in the world of politics .