E2P10D
Demonstration — Part II
Latin
Esse enim substantiæ involvit necessariam existentiam (per propositionem 7 partis I). Si igitur ad hominis essentiam pertineret esse substantiæ, data ergo substantia, daretur necessario homo (per definitionem 2 hujus) et consequenter homo necessario existeret, quod (per axioma 1 hujus) est absurdum. Ergo etc. Q.E.D.
English (Elwes 1883)
The being of substance involves necessary existence (Part i., Prop. vii.). If, therefore, the being of substance appertains to the essence of man, substance being granted, man would necessarily be granted also (II. Def. ii.), and, consequently, man would necessarily exist, which is absurd (II. Ax. i.). Therefore, &c. Q.E.D.