It was not until we saw the picture of the earth, from the moon, that we realized how small and how helpless this planet is - something that we must hold in our arms and care for.

Because our civilization is woven of so many diverse strands, the ideas which any one group accepts will be found to contain numerous contradictions.

The assumption that men and woman are essentially alike in all respects, or even in the most important ones, is a damaging one, as damaging as the assumption that they are different in ways in which they aren't different, perhaps more so.

Contentment can be bought at a price that one can not possibly pay.

From a hundred cultures, [there is] one culture which does what no culture has ever done before-gives a place to every human gift.

War is only an invention, not a biological necessity.

If we are to give our utmost effort and skill and enthusiasm, we must believe in ourselves, which means believing in our past and in our future, in our parents and in our children, in that particular blend of moral purpose and practical inventiveness which is the American character.