The angry man wishes the object of his anger to suffer in return; hatred wishes its object not to exist.

Every formed disposition of the soul realizes its full nature in relation to and dealing with that class of objects by which it is its nature to be corrupted or improved.

I count him braver who overcomes his desires than him who conquers his enemies; for the hardest victory is over self.

Friendship is communion.

By 'life,' we mean a thing that can nourish itself and grow and decay.

Metaphysics is universal and is exclusively concerned with primary substance. ... And here we will have the science to study that which is, both in its essence and in the properties which it has.

All virtue is summed up in dealing justly.