The word 'God' is for me nothing more than the expression and product of human weaknesses, and religious scripture a collection of honourable, but still primitive legends which are nevertheless pretty childish. No interpretation, no matter how subtle, can (for me) change this.

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

You cannot prepare for war and peace at the same time.

There is, however, a somber point in the social outlook of Americans. Their sense of equality and human dignity is mainly limited to people of white skin.... The more I feel like an American, the more the situation pains me.

Playfullness is the essential feature of productive thought.

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

Do you remember how electrical currents and 'unseen waves' were laughed at? The knowledge about man is still in its infancy.