It is like a drinking straw. The surface of a straw is two-dimensional. However, one direction is curled up into a small circle, so that from a distance the straw looks like a one-dimensional line.

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associates and collaborators were Roger Penrose

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It is my view that the simplest explanation is there is no God. No one created the universe and no one directs our fate. This leads me to a profound realization. There is probably no heaven, and no afterlife either. We have this one life to appreciate the grand design of the universe, and for that, I am extremely grateful.

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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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Disability need not be an obstacle to success.

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

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Intelligence is the ability to adapt to change.

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Nothing cannot exist forever.

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I have experimental evidence that time travel is not possible.

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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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