Only black holes of very low mass would emit a significant amount of radiation.

What goes on inside a star is better understood than one might guess from the difficulty of having to look at a little dot of light through a telescope, because we can calculate what the atoms in the stars should do in most circumstances.

Observations indicate that the universe is expanding at an ever increasing rate. It will expand forever, getting emptier and darker.

My first popular book, ‚A Brief History of Time,‘ aroused a great deal of interest, but many found it difficult to understand.

Nature teaches us that tens of billions of light years may have passed, and life in all of its expressions has always been subjected to an incredible combination of matter and radiation.

It’s a pity that nobody has found an exploding black hole. If they had, I would have won a Nobel prize.

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.

My discovery that black holes emit radiation raised serious problems of consistency with the rest of physics. I have now resolved these problems, but the answer turned out to be not what I expected.

There are no black holes in the sense of regimes from which light can’t escape to infinity.

Time can behave like another direction in space under extreme conditions.

The missing link in cosmology is the nature of dark matter and dark energy.

The radiation left over from the Big Bang is the same as that in your microwave oven but very much less powerful. It would heat your pizza only to minus 271.3*C – not much good for defrosting the pizza, let alone cooking it.

The Planck satellite may detect the imprint of the gravitational waves predicted by inflation. This would be quantum gravity written across the sky.

If the rate of expansion one second after the Big Bang had been smaller by even one part in a hundred thousand million million, it would have recollapsed before it reached its present size. On the other hand, if it had been greater by a part in a million, the universe would have expanded too rapidly for stars and planets to form.