Aquinas articulated and defended, both as a philosopher and a theologian, the orthodox Christian view of God. God is the sole being whose existence is the same as His essence: "what subsists in God is His existence." (Hence why God names himself "I Am that I Am" in Exodus 3:14.) Consequently, God cannot be a body (that is, He cannot be composed of matter), He cannot have any accidents, and He must be simple (that is, not separated into parts; the Trinity is one substance in three persons). Further, He is goodness itself, perfect, infinite, omnipotent, omniscient, happiness itself, knowledge itself, love itself, omnipresent, immutable, and eternal. Summing up these properties, Aquinas offers the term "actus purus" (Latin: "pure actuality").