The usefulness of a cup is in its emptiness.

A wise man knows everything.A shrewd one, everybody.

Insanity is doing the same thing in thesame way & expecting a different outcome

What is useful cannot be base

It is better to take many small steps in the right direction than to make a great leap forward only to stumble backward.

Do not mix de galloping of your horse, my knight, with the beating of your heart.