Imagination is more important than knowledge.

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  God does not play dice.

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  Technological progress has merely provided us with more efficient means for going backwards.

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  Facts do not cease to exist because they are ignored.

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  The greatest amount of knowledge, if it has not been worked over by one’s own thinking, is worth much less than a far smaller amount that has been thoroughly thought through.

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  To make war a mere contest of machines without men and without loss of life.

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  When all darkness shall be dissipated by the light of science, when all nations shall be merged into one, and patriotism shall be identical with religion, when there shall be one language, one country, one end, then the dream will have become reality.

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