Aristotle
(page 3)

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.

Humor is the only test of gravity, and gravity of humor; for a subject which will not bear raillery is suspicious, and a jest which will not bear serious examination is false wit.

Poverty is the parent of revolution and crime.

The gods too are fond of a joke.

The moral virtues, then, are produced in us neither by nature nor against nature. Nature, indeed, prepares in us the ground for their reception, but their complete formation is the product of habit.

Anybody can become angry — that is easy, but to be angry with the right person and to the right degree and at the right time and for the right purpose, and in the right way — that is not within everybody's power and is not easy.

The worst form of inequality is to try to make unequal things equal.

Good habits formed at youth make all the difference.

Again, men in general desire the good, and not merely what their fathers had.

All paid jobs absorb and degrade the mind.

It is unbecoming for young men to utter maxims.

Young people are in a condition like permanent intoxication, because youth is sweet and they are growing.