“Fourteenth Proposition: No other substance than God can either exist or be conceived. Proof: God is the absolutely infinite substance, to whom can be denied no attribute which expresses the essence of substance, and He exists necessarily; therefore if there were a substance other than God, it must be explained by means of an attribute of God.” Consequently the substance would not have its own being, but that of God, and therefore would not be a substance. Or if it were still to be substance, “then there would necessarily follow the possibility of there being two substances with the same attribute, which according to the fifth proposition is absurd. From this it then follows that the thing extended and the thing that thinks” are not substances, but “are either attributes of God, or affections of His attributes.” By these proofs and others like them not much is to be gained. “Fifteenth, proposition: What is, is in God, and cannot exist or be conceived without God.” “Sixteenth proposition: By the necessity of the divine nature infinite things must follow in infinite modes, _i.e._, all that can fall under the infinite understanding. God is therefore the absolute First Cause.”[196] Spinoza then ascribes freedom and necessity to God: “God is the absolute free cause, who is determined by nothing outside of Himself, for He exists solely by the necessity of His nature. There is no cause which inwardly or outwardly moves Him to act, except the perfection of His nature. His activity is by the laws of His Being necessary and eternal; what therefore follows from His absolute nature, from His attributes, is eternal, as it follows from the nature of the triangle from eternity and to eternity that its three angles are equal to two right angles.” That is to say, His Being is His absolute power; _actus_ and _potentia_, Thought and Being, are in Him one. God has not therefore any other thoughts which He could not have actualized. “God is the immanent cause of all things, not the transient (_transiens_),” _i.e._, external cause. “His essence and His existence are the same, namely, the truth. A thing which is determined to perform some action, is, since God is cause, necessarily determined thereto by God; and a thing which is thus determined cannot render itself undetermined. In nature nothing is contingent. Will is not a free cause, but only a necessary cause, only a mode; it is therefore determined by another. God acts in accordance with no final causes (_sub ratione boni_). Those who assert that He does so, appear to establish something apart from God, which does not depend on God, and which God in His working keeps in view, as though it were an end. If this view is taken, God is not a free cause, but is subject to fate. It is equally inadmissible to subject all things to the arbitrary pleasure of God, _i.e._, to His indifferent will.”[197] He is determined solely by His own nature; the activity of God is thus His power, and that is necessity.