Abstract

In the present article, the author deals with the role of the middle term in the four figures of conjunctive syllogism. In this regard, he refers to the views of logicians such as Ibn Sina, Fakhr al-Din Razi, Muhaqqiq Tusi, Urmawi, Athir al-Din Abhari as well as Mulla Sadra. The author is of the view that many difficulties in syllogisms arise out of linguistic deficiencies.By resorting to Mulla Sadra's view, the author concludes that we are not compelled to divide the syllogism to its traditional four forms, for on the basis of the Sadrian view, the only condition for the productivity of all forms of syllogism is the repetition of the middle term. Therefore, with regard to the mechanical deduction of the conclusion of premises, it seems unneccessary for us to distinguish the figures of a syllogism from each other.