1p23d.md (825B)
1 A mode exists in something else, through which it must 2 be conceived (Def. v.), that is (Prop. xv.), it exists solely in 3 God, and solely through God can be conceived. If therefore a mode 4 is conceived as necessarily existing and infinite, it must 5 necessarily be inferred or perceived through some attribute of 6 God, in so far as such attribute is conceived as expressing the 7 infinity and necessity of existence, in other words (Def. viii.) 8 eternity; that is, in so far as it is considered absolutely. A 9 mode, therefore, which necessarily exists as infinite, must 10 follow from the absolute nature of some attribute of God, either 11 immediately (Prop. xxi.) or through the means of some 12 modification, which follows from the absolute nature of the said 13 attribute; that is (by Prop. xxii.), which exists necessarily 14 and as infinite. 15 16