To believe in something not yet proved and to underwrite it with our lives: it is the only way we can leave the future open. Man, surrounded by facts, permitting himself no surmise, no intuitive flash, no great hypothesis, no risk, is in a locked cell. Ignorance cannot seal the mind and imagination more surely.

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Education is a private matter between the person and the world of knowledge and experience, and has little to do with school or college.

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The human heart dares not stay away too long from that which hurt it most. There is a return journey to anguish that few of us are released from making.

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When you stop learning, stop listening, stop looking and asking questions, always new questions, then it is time to die.

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To believe in something to yet proved and to underwrite it with our lives it is the only way we can leave the future open.

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I soon realized that no journey carries one far unless, as it extends into the world around us, it goes an equal distance into the world within.

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