The Unity of the Intellect and the Intelligible A Brief Comparison between Ibn Sina and Mulla

Ibn Sina and Mulla Sadra are two Muslim philosophers whose philosophical principles and beliefs have been dominant in the Iranian philosophical centers for centuries. The principle of the unity of the intellect and the intelligible separates the ways of these two philosophers. Ibn Sina severely criticizes it while Mulla Sadra considers it as one of his honours. In this article, explaining the point of difference between the two, we first mention four arguments of Ibn Sina against this principle, and then we will answer to and reject them according to Mulla Sadra’s doctrines. In different places a comparison between the two philosophers is made and in the end, the contribution of each one is specified, but Mulla Sadra’s viewpoint is supported