Only those who do not seek power are qualified to hold it.

He who is of a calm and happy nature, will hardly feel the pressure of age

I do not live to play, but I play in order that I may live, and return with greater zest to the labors of life.

No one is a friend to his friend who does not love in return.

I can show you that the art of calculation has to do with odd and even numbers in their numerical relations to themselves and to each other.

A man who really fights for justice must lead a private, not a public, life if he is to survive for even a short time.

Wealth does not bring excellence, but that wealth comes from excellence.