It is like a drinking straw. The surface of a straw is two-dimensional. However, one direction is curled up into a small circle, so that from a distance the straw looks like a one-dimensional line.

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Quiet people have the loudest minds.

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How difficult life may seem, while there’s life, there is hope.

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Nothing is better than reading and gaining more and more knowledge.

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Look up at the stars, not down at your feet.

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contains on average some one hundred billion stars. If a star were a grain of salt, you could fit all the stars visible to the naked eye on a teaspoon, but all the stars in the universe would fill a ball more than eight miles wide.

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remember to look up at the stars

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We are very, very small, but we are profoundly capable of very, very big things.

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It is all right to make mistakes; nothing is perfect because with perfection, we would not exist.

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We are all now connected by the Internet, like neurons in a giant brain.

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