We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.

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The basic assumption of science is scientific determinism.

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The thing about smart people is that they seem like crazy people to dumb people.

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What I meant by 'we would know the mind of God' is, we would know everything that God would know, if there were a God. Which there isn't. I'm an atheist.

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Galileo, perhaps more than any other single person, was responsible for the birth of modern science.

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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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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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Unfortunately, however, these two theories are known to be inconsistent with each other—they cannot both be correct.

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The huge questions of existence still remain unanswered—how did life begin on Earth? What is consciousness? Is there anyone out there or are we alone in the universe? These are questions for the next generation to work on.

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Do you ever wonder how much deeper the ocean would be without sponges?

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