To be free means to be independent, not to be influenced by what others think and say.

Be a loner. That gives you time to wonder, to search for the truth. Have holy curiosity. Make your life worth living.

The real problem is in the hearts and minds of men. It is not a problem of physics but of ethics. It is easier to denature plutonium than to denature the evil spirit of man.

A thought that sometimes makes me hazy: Am I - or are the others crazy?

Don't wait for miracles, your whole life is a miracle.

Nationalism is the measels of mankind.

It is impossible to solve significant problems using the same knowledge that created them.