1p11a2.md (625B)
1 The potentiality of non–existence is a negation of power, and contrariwise the 2 potentiality of existence is a power, as is obvious. If, then, that which 3 necessarily exists is nothing but finite beings, such finite beings are more 4 powerful than a being absolutely infinite, which is obviously absurd; therefore, 5 either nothing exists, or else a being absolutely infinite necessarily exists 6 also. Now we exist either in ourselves, or in something else which necessarily 7 exists (see Axiom. i. and Prop. vii.). Therefore a being absolutely infinite–in 8 other words, God (Def. vi.)–necessarily exists. Q.E.D. 9 10