Insanity: doing the same thing over and over again and expecting different results.

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I must be willing to give up what I am in order to become what I will be.

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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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Strive not to be a success, but rather to be of value.

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The more I study science, the more I believe in God.

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There is no vaccine against stupidity.

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The world will not be destroyed by those who do evil, but by those who watch them without doing anything.

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Never underestimate your own ignorance.

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Show me a satisfied man, and I'll show you a failure.

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Let every man judge according to his own standards, by what he has himself read, not by what others tell him.

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