Diogenes

Of what use is a philosopher who doesn't hurt anybody's feelings?

The art of being a slave is to rule one's master.

As a matter of self-preservation, a man needs good friends or ardent enemies, for the former instruct him and the latter take him to task.

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

We come into the world alone and we die alone. Why, in life, should we be any less alone?

All things are in common among friends.

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

On being asked by someone how he could become famous, Diogenes responded: 'By worrying as little as possible about fame

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

Most men are within a finger's breadth of being mad.

The mob is the mother of tyrants.

A friend is one soul abiding in two bodies.

I threw my cup away when I saw a child drinking from his hands at the trough.

Calumny is only the noise of madmen.

You will become a teacher of yourself when for the same things that you blame others, you also blame yourself.

The sun too penetrates into privies, but is not polluted by them.

I have nothing to ask but that you would remove to the other side, that you may not, by intercepting the sunshine, take from me what you cannot give.

Modesty is the color of virtue.

The sun, too, shines into cesspools and is not polluted.

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

We have two ears and one tongue so that we would listen more and talk less.