PART I: CONCERNING GOD.
Page: 21

nature of some attribute, to exist in some attribute of God, for
instance, the idea of God expressed in the attribute thought, and
let it be supposed at some time not to have existed, or to be
about not to exist.

Now thought being an attribute of God must necessarily exist
unchanged (by Prop. xi., and Prop. xx., Cor. ii.); and beyond the
limits of the duration of the idea of God (supposing the latter
at some time not to have existed, or not to be going to exist)
thought would perforce have existed without the idea of God,
which is contrary to our hypothesis, for we supposed that,
thought being given, the idea of God necessarily flowed
therefrom. Therefore the idea of God expressed in thought, or
anything which necessarily follows from the absolute nature of
some attribute of God, cannot have a limited duration, but
through the said attribute is eternal, which is our second point.
Bear in mind that the same proposition may be affirmed of
anything, which in any attribute necessarily follows from God's
absolute nature.

XXII. Whatsoever follows from any attribute of God, in so far as
it is modified by a modification, which exists necessarily and as
infinite, through the said attribute, must also exist necessarily
and as infinite.

>>>>>Proof--The proof of this proposition is similar to that of
the preceding one.

XXIII. Every mode, which exists both necessarily and as
infinite, must necessarily follow either from the absolute nature
of some attribute of God, or from an attribute modified by a
modification which exists necessarily, and as infinite.

>>>>>Proof--A mode exists in something else, through which it
must be conceived (Def. v.), that is (Prop. xv.), it exists
solely in God, and solely through God can be conceived. If
therefore a mode is conceived as necessarily existing and
infinite, it must necessarily be inferred or perceived through
some attribute of God, in so far as such attribute is conceived
as expressing the infinity and necessity of existence, in other
words (Def. viii.) eternity; that is, in so far as it is
considered absolutely. A mode, therefore, which necessarily