Participation inThe philosophy of Saint Thomas Aquinas

The concept of participation is, one of the key concepts that plays a central role in Thomas's metaphysics, based on which it communicates between creator and creature. It has a Record in the philosophy of Plato and Boethius, And in Thomas's terms, when anything receives in a particular manner that which belongs to another in a total manner. It is said to participate it. Since his metaphysics is based on special attention to "existence", and existence is also attributed to both the Creator and the Creator, and the creatures have existence, therefore, the type of relationship between the creator and the creature should be studied and it appears that each one shares the same in existence. Also, what role does it play in the relationship between existence and Essence? This paper intends, in the analytical and research methodology, to study the problem of participation in Thomas Aquinas philosophy by studying the his works and the scholars to determine that what is the purpose of participation, types of participation and the uses of the concept of participation in Thomas's philosophy. He recognizes three types of participation, of which only one can be attributed to God and beings. He justifies the relation between of creator and creature, the relation of Essence and existence and multiplicative relation with the unit by the participation theory.