Abstract
One of the well-known arguments for the existence of God is “the Argument from Necessity and Contingency”. The main components of this argument, as the name suggests, must be “necessity” and “Contingency”. It was Avicenna who first formulated the argument, according to whose account in “Shefa” and” al Esharat va al Tanbihat” it is the only argument for the existence of God that ends its task immediately, i.e. simply through the concept of being. This argument was criticized and rejected by Averroes, who presents another version of it after making some modifications in it. The argument was, however, approved of by Aquinas, the medieval philosopher and theologian, who regarded it as the best of all his arguments for the existence of God.
This article is concerned with the views of the three mentioned philosophers in an attempt to evaluate their conception and application of the two notions of “necessity” and “contingency”.
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