This creative act of God is that by which he reduces possibility to actuality. It is evident that this possibility of creation, or creability of finite existences extrinsic to the divine essence, is necessary and eternal. For God could not think of doing that which he does not think as possible, and his thoughts are eternal. The thought or idea of creation is therefore eternal in the divine mind. It is a divine and eternal archetype or ideal, which the externised, concrete reality copies and represents. The divine essence is the complete and adequate object of the divine contemplation. It is, therefore, in his own essence that God must have beheld the eternal possibility of creation and the ground or reason of creability. It is the divine essence itself, therefore, which contains the archetype or ideal of a possible creation. As an archetype, it must contain that which is equivalent to finite essences, capable of being brought into concrete, actual existence by the divine power, and multiplied to an indefinite extent God's eternal knowledge of the possibility of creation is, therefore, his knowledge of his own essence, as an archetype of existences which he is capable of enduing with reality extrinsic to the reality of his own being, by his omnipotent power. The eternal possibility of creation, therefore, exists necessarily in the being and omnipotence of God. It is the imitability of the divine essence as archetype by finite essences, which are its real and extrinsic similitudes, and which are extrinsecated by an act of the divine will. The ideal or archetype of creation is evidently as necessary, as eternal, as unchangeable, as God himself. God cannot create except according to this archetype, and in creating must necessarily copy himself, to give extrinsic existence to something which is a concrete expression of the divine ideal in his own intelligence. This ideal which creation copies being, therefore, eternal in the divine intelligence, and the interior activity of the divine intelligence, or its interior ideal life, being inexplicable except in the relation of the three persons in God, creation is likewise inexplicable, except in relation to the distinct persons of the Trinity.