Without the sense of fellowship with men of like mind... life would have seemed to me empty.

Don't do anything that goes against your conscience, even if your country says so.

We must learn the difficult lesson that the future of Mankind will only be tolerable when our course, in world affairs as in others, is based upon justice and law rather than the threat of naked power.

Thinking like we (always) have is what got us where we are. It is not going to get us where we are going.

Nature conceals her mystery by her essential grandeur.

Not until the creation and maintenance of decent conditions of life for all men are recognized and accepted as a common obligation of all men and all countries — not until then shall we, with a certain degree of justification, be able to speak of mankind as civilized.

Although I tried to be universal in thought, I am European by instinct and inclination.