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

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Condemnation before investigation is the highest form of ignorance.

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Everything that exists in your life, does so because of two things: something you did or something you didn't do.

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

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

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Life is like riding a bicycle. To keep your balance, you must keep moving.

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Weak people revenge. Strong people forgive. Intelligent People Ignore.

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Persistence is the most powerful force on earth, it can move mountains.

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What you can't imagine, you can't discover.

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Do not grow old, no matter how long you live. Never cease to stand like curious children before the Great Mystery into which we were born.

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