The concept of the cause according to Aristotle and Ibn Sina, a comparative study

The issue of the Cause was an important topic in the history of Greek and Islamic philosophy, as it was the coclusion of the research of  the existence origin and nature. Therefore this research had to present the ideas of Cause of both Aristotle and Avicenna, in a comparative study. We have found that Aristotle has followed a critical approach towards preceded philosophers, especially Plato’s Ideals theory. In first chapter we have tried to address the concepts and faculties on which this research was built, then in the second chapter we moved to search on the concept of Cause in its Greek concept (Aristotle): So we stopped at Aristotle’s concept of the Cause, the cognitive dimension of the Cause of Aristotle, showing the link of the Cause with Aristotle’s epistemology. The third requirement searched in the Cause and types of sciences according to Aristotle.The second topic dealt with the sections and function of Cause according to Aristotle’s understanding of the types of Causes, to talk after that about the relationship of the Cause with the epistemological idealism of Aristotle, and about Aristotle’s Causes in natures and divinities, to conclude that the concept of Ccausality seems to be a decisive concept in proving the age of the world, and the possibility and time as two principles for the existence of the world in that they are a previous, ancient and eternal cause. At the third chapter to talk about the types and issues of Causes according to Avicenna. This chapter included, first, the link of the final Cause with the theology of Avicenna. Then we dealt with the idea of the Causes of essence and its connection to existence. Then we moved on to study the relationship of the Efficient Cause with the concept of Causation.As for the second topic of this chapter, it was under the title of Avicenna’s methodological and cognitive Function of Causes,to deal, in the first requirement, with the final Cause and its relationship to the duty of existence, and to  discuss the idea of the Material Cause and the age of the world at the second requirement, then we moved, in the third requirement, to study the relationship of the Cause with the effect in Avicenna’s cognitive system.The forth chapter dealt with the conclusions we reached through our study of the concept of the cause between Aristotle and Avicenna