Quotes from Stephen Hawking

In Britain, like most of the developed world, stem-cell research is regarded as a great opportunity. America will be left behind if it doesn't change policy.

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

Science is beautiful when it makes simple explanations of phenomena or connections between different observations. Examples include the double helix in biology and the fundamental equations of physics.

I used to think information was destroyed in black hole. This was my biggest blunder, or at least my biggest blunder in science.

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

With genetic engineering, we will be able to increase the complexity of our DNA, and improve the human race. But it will be a slow process, because one will have to wait about 18 years to see the effect of changes to the genetic code.

In less than a hundred years, we have found a new way to think of ourselves. From sitting at the center of the universe, we now find ourselves orbiting an average-sized sun, which is just one of millions of stars in our own Milky Way galaxy.

A few years ago, the city council of Monza, Italy, barred pet owners from keeping goldfish in curved bowls... saying that it is cruel to keep a fish in a bowl with curved sides because, gazing out, the fish would have a distorted view of reality. But how do we know we have the true, undistorted picture of reality?

The Paralympic Games is about transforming our perception of the world.

I can't say that my disability has helped my work, but it has allowed me to concentrate on research without having to lecture or sit on boring committees.

'The Simpsons' appearances were great fun. But I don't take them too seriously. I think 'The Simpsons' have treated my disability responsibly.

We have made remarkable progress in the last hundred years, but if we want to continue, our future is in space.

We only have to look at ourselves to see how intelligent life might develop into something we wouldn't want to meet.

If the human race is to continue for another million years, we will have to boldly go where no one has gone before

When one's expectations are reduced to zero, one really appreciates everything one does have

Unless mankind redesigns itself by changing our DNA through altering our genetic makeup, computer-generated robots will take over our world.

God not only plays dice, He throws them in the corner where you can't see them.

Issuing an insurance policy against abduction by aliens seems a pretty safe bet.

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.

It is generally recognised that women are better than men at languages, personal relations and multi-tasking, but less good at map-reading and spatial awareness. It is therefore not unreasonable to suppose that women might be less good at mathematics and physics.

Life would be tragic if it weren't funny.

Work gives you meaning and purpose and life is empty without it.

I would like nuclear fusion to become a practical power source. It would provide an inexhaustible supply of energy, without pollution or global warming.

Scientists have become the bearers of the torch of discovery in our quest for knowledge.