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

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

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

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

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What is important is that we have the ability to create.

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

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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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