Prosperity makes friends and adversity tries them. A true friend is one soul in two bodies

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.

He who is unable to live in society, or who has no need because he is sufficient for himself, must be either a beast or a god.

Excellence is not an art. It is the habit of practice.

Nowadays, for the sake of the advantage which is to be gained from the public revenues and from office, men want to be always in office.

Temperance is a mean with regard to pleasures.

Character is made by many acts; it may be lost by a single one.