As long as there are sovereign nations possessing great power, war is inevitable.

It would be better if you began to teach others only after you yourself have learned something.

Love is not the stupidest thing a man does, but it cannot be blamed on gravity.

Life isn't worth living, unless it is lived for someone else.

No problem is ever solved in the same consciousness thas was used to create it.

I make it a rule not to clutter my mind with simple information that I can find in a book in five minutes.

It seems to me that the idea of a personal God is an anthropological concept which I cannot take seriously. I also cannot imagine some will or goal outside the human sphere... Science has been charged with undermining morality, but the charge is unjust. A man's ethical behavior should be based effectually on sympathy, education, and social ties and needs; no religious basis is necessary. Man would indeed be in a poor way if he had to be restrained by fear of punishment and hope of reward after death.