The radical novelty of modern science lies precisely in the rejection of the belief... that the forces which move the stars and atoms are contingent upon the preferences of the human heart.

In the blood of the martyrs to intolerance are the seeds of unbelief

The final test of a leader is that he leaves behind him in other men the conviction and the will to carry on.

A useful definition of liberty is obtained only by seeking the principle of liberty in the main business of human life, that is to say, in the process by which men educate their responses and learn to control their environment.

Culture is the name for what people are interested in, their thoughts, their models, the books they read and the speeches they hear, their table-talk, gossip, controversies, historical sense and scientific training, the values they appreciate, the quality of life they admire. All communities have a culture. It is the climate of their civilization.

Franklin D. Roosevelt is no crusader. He is no tribune of the people. He is no enemy of entrenched privilege. He is a pleasant man who, without any important qualifications for the office, would very much like to be President.

Creative ideas come to the intuitive person who can face up to the insecurity of looking beyond the obvious.