Young men have strong passions and tend to gratify them indiscriminately. Of the bodily desires, it is the sexual by which they are most swayed and in which they show absence of control...They are changeable and fickle in their desires which are violent while they last, but quickly over: their impulses are keen but not deep rooted.

That in the soul which is called mind (by mind I mean that whereby the soul thinks and judges) is, before it thinks, not actually any real thing. For this reason it cannot reasonably be regarded as blended with the body

To Unlearn is as hard as to Learn

And this lies in the nature of things: What people are potentially is revealed in actuality by what they produce.

Those who have been eminent in philosophy, politics, poetry, and the arts have all had tendencies toward melancholia.

The science that studies the supreme good for man is politics.

Happiness is a thing honored and perfect. This seems to be borne out by the fact that it is a first principle or starting-point, since all other things that all men do are done for its sake; and that which is the first principle and cause of things good we agree to be something honorable and divine.