You can’t get to a time before the Big Bang because there was no time before the Big Bang. We have finally found something that doesn’t have a cause, because there was no time for a cause to exist in.

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It is no good getting furious if you get stuck. What I do is keep thinking about the problem but work on something else. Sometimes it is years before I see the way forward. In the case of information loss and black holes, it was 29 years.

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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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However difficult life may seem, there is always something you can do and succeed at.

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Whether you want to uncover the secrets of the universe, or you just want to pursue a career in the 21st century, basic computer programming is an essential skill to learn.

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We live in the most probable of all possible worlds.

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I don't fear God- I fear His believers.

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What I have learned from life is to make the most of what you have got.

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I would see the end of physics as we know it, but now I think the wonder of discovery will continue long after I am gone. We are close to some of these answers, but we are not there yet.

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How do we know that we are not just characters in a computer-generated soap opera?

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