It is very important for young people keep their sense of wonder and keep asking why.

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Quiet people have the loudest minds.

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There is no unique picture of reality.

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Half the battle is just showing up.

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Scientific discovery may not be better than sex, but the satisfaction lasts longer.

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A snooze button is a poor substitute for no alarm clock at all.

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This means that at earlier times objects would have been closer together. In fact, it seemed that there was a time, about ten or twenty thousand million years ago, when they were all at exactly the same place and when, therefore, the density of the universe was infinite.

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I used to think information was destroyed in black hole. This was my biggest blunder, or at least my biggest blunder in science.

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I am just a child who has never grown up. I still keep asking these 'how' and 'why' questions. Occasionally, I find an answer.

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Equations are just the boring part of mathematics. I attempt to see things in terms of geometry.

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