Abstract

This paper argues that, in spite of interpretations to the contrary, Avicenna and Aquinas are fundamentally agreed as to subject and principles of metaphysics. The first part shows the philosophers’ common metaphysical starting points in the realm of assent and the realm of conceptualization as well as their common use of the distinction between principles common by causality and common by predication to provide the overall structure for their metaphysics. The second part argues that both philosophers have similar descriptions of God and common being and thus similar views on the relation between God and the subject of metaphysics; and the third part, by surveying some remarks by Avicenna on Sufism and the use of the Qur’ān’s description of God’s attributes, argues that Avicenna is not forced by his naturalistic theory of prophecy to include God under the subject of metaphysics.