If at first the idea is not absurd, then there is no hope for it.

In conclusion I wish to say that in working at the problem here dealt with I have had the loyal assistance of my friend and colleague M. Besso, and that I am indebted to him for several valuable suggestions.

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.

Often in evolutionary processes a species must adapt to new conditions in order to survive. Today the atomic bomb has altered profoundly the nature of the world as we know it, and the human race consequently finds itself in a new habitat to which it must adapt its thinking.

I have repeatedly said that in my opinion the idea of a personal God is a childlike one.

If you want the answer to anything, go sit in Nature for awhile

The Press, which is mostly controlled by vested interests, has an excessive influence on public opinion.