Q.E.D.
PROP.XXVIII.

The mind's highest good is the knowledge of God, and the mind's highest virtue is to know God.
Proof .-- The mind is not capable of understanding anything higher than God, that is (I.Def.

vi.), than a Being absolutely infinite, and without which (I.xv.) nothing can either be or be conceived; therefore (IV.xxvi.and xxvii.), the mind's highest utility or (IV.Def.

i.) good is the knowledge of God.

Again, the mind is active, only in so far as it understands, and only to the same extent can it be said absolutely to act virtuously.