Diogenes

Wise kings generally have wise counselors and he must be a wise man himself who is capable of distinguishing one.

I am not an Athenian or a Greek, but a citizen of the world.

Those who have virtue always in their mouths, and neglect it in practice, are like a harp, which emits a sound pleasing to others, while itself is insensible of the music.

When I look upon seamen, men of science and philosophers, man is the wisest of all beings when I look upon priests and prophets nothing is as contemptible as man.

It is the privilege of the gods to want nothing, and of godlike men to want little.

Man is the most intelligent of the animals - and the most silly.

Dogs and philosophers do the greatest good and get the fewest rewards.

The foundation of every state is the education of its youth.