Investigating Mulla Sadra's Argument of the Truthful

For Mulla Sadra, the criterion for “the argument of the truthful” is that it should start from the origin of existence. The origin of existence is nothing except the Almighty Necessary-Being. Thus, in such an argument, reasoning is from essence for essence. Although this seems to beg the question, in fact it is not, because when we look at the origin of existence, we see that the origin of existence is the same as the Necessary-Being and the reasoning is from essence for essence. Indeed, the Necessary-Being has not been assumed in advance to necessitate contradiction and beg the question. This reasoning is not a priori demonstration, because Necessary-Being has no cause to be liable to the rules of such arguments. This is true if external causality is considered the criterion for “a priori argument”. Therefore, we may consider it “semi a priori” since it leads to certainty. Besides, one may extend the a priori argumentation to analytic causes and consider this type of reasoning as a priori as well; and since analytic causality is also true causality, its being a priori will also be a true one.