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

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

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We are very, very small, but we are profoundly capable of very, very big things.

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Estoy convencido de que los humanos necesitamos dejar la Tierra para evitar correr el riesgo de ser aniquilados.

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I have noticed even people who claim everything is predestined, and that we can do nothing to change it, look before they cross the road.

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Although I cannot move, and I have to speak through a computer, in my mind, I am free.

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So remember to look up at the stars and not down at your feet. Try to make sense of what you see and hold on to that childlike wonder about what makes the universe exist.

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The more you learn, the more you know. The more you know, the more you forget. The more you forget, the less you know. So why bother to learn.

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