We are enriched by our reciprocate differences.

War: a massacre of people who don't know each other for the profit of people who know each other but don't massacre each other.

The mind has transformed the world, and the world is repaying it with interest. It has led man where he had no idea how to go.

Our most important thoughts are those that contradict our emotions.

Serious people have few ideas. People with ideas are never serious.

Great things are accomplished by those who do not feel the impotence of man. This is a precious gift.

History is the most dangerous product which the chemistry of the mind has concocted. Its properties are well known. It produces dreams and drunkenness. It fills people with false memories, exaggerates their reactions, exacerbates old grievances, torments them in their repose, and encourages either a delirium of grandeur or a delusion of persecution. It makes whole nations bitter, arrogant, insufferable and vainglorious.