One is punished by the very things by which he sins.

My friend is he who will tell me my faults in private.

And when I was born, I drew in the common air, and fell upon the earth, which is of like nature; and the first voice which I uttered was crying, as all others do.

There are three types of friends: those like food without which you can't live those like medicine which you need occasionally and those like an illness which you never want.

A wise man's question contains half the answer.

The first step in the acquisition of wisdom is silence, the second listening, the third memory, the fourth practice, the fifth teaching others".