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We can have no "50-50" allegiance in this country. Either a man is an American and nothing else, or he is not an American at all.

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Nature is trying very hard to make us succeed, but nature does not depend on us. We are not the only experiment.

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You can no more win a war than you can win an earthquake.

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Above all, we are coming to understand that the arts incarnate the creativity of a free people. When the creative impulse cannot flourish, when it cannot freely select its methods and objects, when it is deprived of spontaneity, then society severs the root of art.

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Freedom of speech and freedom of action are meaningless without freedom to think. And there is no freedom of thought without doubt.

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The mind has a thousand eyes.
And the heart but one;
Yet the life of a whole life dies
When love is done.

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Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.

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Science is the search for truth - it is not a game in which one tries to beat his opponent, to do harm to others. We need to have the spirit of science in international affairs, to make the conduct of international affairs the effort to find t he right solution, the just solution of international problems, not the effort by each nation to get the better of other nations, to do harm to them when it is possible.

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Hope, like faith, is nothing if it is not courageous; it is nothing if it is not ridiculous.

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The mind cannot long act the role of the heart.

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