In the middle of every difficulty lies opportunity.

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Cherish the questions, for the answers keep changing.

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The same thinking that has led you to where you are is not going to lead you to where you want to go.

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We can't solve today's problems with the mentality that created them.

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The height of stupidity is most clearly demonstrated by the individual who ridicules something he knows nothing about.

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Be a loner. That gives you time to wonder, to search for the truth. Have holy curiosity. Make your life worth living.

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There comes a point in your life when you need to stop reading other people's books and write your own.

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Everyone knew it was impossible, until a fool who didn't know came along and did it.

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Don't wait for miracles, your whole life is a miracle.

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I never made one of my discoveries through the process of rational thinking

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