I'm happy if I have added something to our understanding of the universe.

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We spend a great deal of time studying history, which, let’s face it, is mostly the history of stupidity. So

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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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I have experimental evidence that time travel is not possible.

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If what we regard as real depends on our theory, how can we make reality the basis of our philosophy? But we cannot distinguish what is real about the universe without a theory. It makes no sense to ask if it corresponds to reality, because we do not know what reality is independent of a theory.

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Teori relativitas umum Einstein menyiratkan bahwa alam semesta harus punya permulaan dan, mungkin akhir.

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I've noticed that even people who believe in fate look both ways before crossing the street.

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The wise never marry, and when they marry they become otherwise.

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

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