Progress is impossible without change, and those who cannot change their minds, can't change anything.

The best way to keep one's word is not to give it.

The torment of precautions often exceeds the dangers to be avoided.

Your dreams are the whispers of your soul. Listen to them and pursue them with passion.

Great spirits have always encountered violent opposition from mediocre minds.

I never did give them hell. I just told the truth, and they thought it was hell.

Nationalism is an infantile disease. It is the measles of mankind.