Thomas Aquinas' Concept of Metaphysics

The paper deals with Aquinas' concept of metaphysics. Firstly, the author explains what science is according to Aquinas, and which place belongs to metaphysics within Aquinas' division of the theoretical sciences. Secondly, the subject of metaphysics is determined in order to show the character of metaphysics. Aquinas' commentaries on Boethius' De Trinitate and on Aristotle's Metaphysics are examined as two of the most important texts on this problem. Thirdly, the author tries to explain and harmonize Aquinas' two different definitions of first philosophy.

Keywords: Metaphysics; First Philosophy; Theology; Ens; Science