History not used is nothing, for all intellectual life is action, like practical life, and if you don't use the stuff - well, it might as well be dead.

Civilizations die from suicide, not by murder.

The value of the goal lies in the goal itself; and therefore the goal cannot be attained unless it is pursued for its own sake.

It is a paradoxical but profoundly true and important principle of life that the most likely way to reach a goal is to be aiming not at that goal itself but at some more ambitious goal beyond it.

Love's way of dealing with us is different from conscience's way. Conscience commands; love inspires. What we do out of love, we do because we want to.

We shall have to share out the fruits of technology among the whole of mankind. The notion that the direct and immediate producers of the fruits of technology have a proprietary right to these fruits will have to be forgotten. After all, who is the producer? Man is a social animal, and the immediate producer has been helped to produce by the whole structure of society, beginning with his own education.

Civilization is a movement and not a condition, a voyage and not a harbor.