Stephen Hawking Quotes

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Women. They are a complete mystery.

No one can resist the idea of a crippled genius.

Nothing cannot exist forever.

All my adult life people have been helping me.

God not only plays dice, but also sometimes throws them where they cannot be seen.

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

Evolution has ensured that our brains just aren't equipped to visualise 11 dimensions directly. However, from a purely mathematical point of view it's just as easy to think in 11 dimensions, as it is to think in three or four.

People won't have time for you if you are always angry or complaining.

We think we have solved the mystery of creation. Maybe we should patent the universe and charge everyone royalties for their existence.

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

When we understand string theory, we will know how the universe began. It won't have much effect on how we live, but it is important to understand where we come from and what we can expect to find as we explore.

In the past, there was active discrimination against women in science. That has now gone, and although there are residual effects, these are not enough to account for the small numbers of women, particularly in mathematics and physics.

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

I have wondered about time all my life.

I have so much that I want to do. I hate wasting time.

The human race may be the only intelligent beings in the galaxy.

I don't have much positive to say about motor neuron disease, but it taught me not to pity myself because others were worse off, and to get on with what I still could do. I'm happier now than before I developed the condition.

My advice to other disabled people would be, concentrate on things your disability doesn't prevent you doing well, and don't regret the things it interferes with. Don't be disabled in spirit as well as physically.

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.

The voice I use is a very old hardware speech synthesizer made in 1986. I keep it because I have not heard a voice I like better and because I have identified with it.

My wife and I love each other very much.

To my mathematical brain, the numbers alone make thinking about aliens perfectly rational. The real challenge is to work out what aliens might actually be like.

Life on Earth is at the ever-increasing risk of being wiped out by a disaster, such as sudden global nuclear war, a genetically engineered virus or other dangers we have not yet thought of.

I think the human race doesn't have a future if it doesn't go into space.

I grew up thinking that a research scientist was a natural thing to be.

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.

Earth might one day soon resemble the planet Venus.

Stem cell research is the key to developing cures for degenerative conditions like Parkinson's and motor neuron disease from which I and many others suffer. The fact that the cells may come from embryos is not an objection, because the embryos are going to die anyway.

I believe the universe is governed by the laws of science. The laws may have been decreed by God, but God does not intervene to break the laws.

I think those who have a terminal illness and are in great pain should have the right to choose to end their own life, and those that help them should be free from prosecution.

Theoretical physics is one of the few fields in which being disabled is no handicap - it is all in the mind.

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.

For years, my early work with Roger Penrose seemed to be a disaster for science. It showed that the universe must have begun with a singularity, if Einstein's general theory of relativity is correct. That appeared to indicate that science could not predict how the universe would begin.

Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.

However difficult life may seem, there is always something you can do and succeed at.

We are in danger of destroying ourselves by our greed and stupidity. We cannot remain looking inwards at ourselves on a small and increasingly polluted and overcrowded planet.

We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.

Intelligence is the ability to adapt to change.

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.

The past, like the future, is indefinite and exists only as a spectrum of possibilities.

God not only plays dice, He also sometimes throws the dice where they cannot be seen.

The universe is governed by science. But science tells us that we can't solve the equations, directly in the abstract.

Maybe I don't have the most common kind of motor neuron disease, which usually kills in two or three years.

My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.

Time travel used to be thought of as just science fiction, but Einstein's general theory of relativity allows for the possibility that we could warp space-time so much that you could go off in a rocket and return before you set out.

I am just a child who has never grown up. I still keep asking these 'how' and 'why' questions. Occasionally, I find an answer.

If you believe in science, like I do, you believe that there are certain laws that are always obeyed.

In my opinion, there is no aspect of reality beyond the reach of the human mind.

To confine our attention to terrestrial matters would be to limit the human spirit.

I think computer viruses should count as life. I think it says something about human nature that the only form of life we have created so far is purely destructive. We've created life in our own image.

Not only does God play dice, but... he sometimes throws them where they cannot be seen.

Even if there is only one possible unified theory, it is just a set of rules and equations. What is it that breathes fire into the equations and makes a universe for them to describe?

There are grounds for cautious optimism that we may now be near the end ofthe search for the ultimate laws of nature.

The usual approach of science of constructing a mathematical model cannot answer the questions of why there should be a universe for the model to describe. Why does the universe go to all the bother of existing?

The whole history of science has been the gradual realization that events do not happen in an arbitrary manner, but that they reflect a certain underlying order, which may or may not be divinely inspired.

Someone told me that each equation I included in the book would halve the sales.

It is not clear that intelligence has any long-term survival value.

One cannot really argue with a mathematical theorem.

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.

If we do discover a complete theory, it should be in time understandable in broad principle by everyone. Then we shall all, philosophers, scientists, and just ordinary people be able to take part in the discussion of why we and the universe exist.

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.

Most sets of values would give rise to universes that, although they might be very beautiful, would contain no one able to wonder at that beauty.

Although September 11 was horrible, it didn't threaten the survival of the human race, like nuclear weapons do.

I don't think the human race will survive the next thousand years, unless we spread into space.

There are too many accidents that can befall life on a single planet.

You can't regulate every lab in the world.

If aliens visit us, the outcome would be much as when Columbus landed in America, which didn't turn out well for the Native Americans.

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

I'm not afraid of death, but I'm in no hurry to die. I have so much I want to do first.

Science predicts that many different kinds of universe will be spontaneously created out of nothing. It is a matter of chance which we are in.

We should seek the greatest value of our action.

There is no heaven or afterlife for broken-down computers; that is a fairy story for people afraid of the dark.

Philosophers have not kept up with modern developments in science. Particularly physics.

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

Why are we here? Where do we come from? Traditionally, these are questions for philosophy, but philosophy is dead.

Using e-mail, I can communicate with scientists all over the world.

Obviously, because of my disability, I need assistance. But I have always tried to overcome the limitations of my condition and lead as full a life as possible. I have traveled the world, from the Antarctic to zero gravity.

I believe in universal health care. And I am not afraid to say so.

There is no unique picture of reality.

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.

Science is not only a disciple of reason but, also, one of romance and passion.

Theology is unnecessary.

I believe everyone should have a broad picture of how the universe operates and our place in it. It is a basic human desire. And it also puts our worries in perspective.

My work and my family are very important to me.

Among physicists, I'm respected I hope.

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.

There is a real danger that computers will develop intelligence and take over. We urgently need to develop direct connections to the brain so that computers can add to human intelligence rather than be in opposition.

I don't want to write an autobiography because I would become public property with no privacy left.

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

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

I think the brain is essentially a computer and consciousness is like a computer program. It will cease to run when the computer is turned off. Theoretically, it could be re-created on a neural network, but that would be very difficult, as it would require all one's memories.

I enjoy all forms of music - pop, classical and opera.

People who boast about their I.Q. are losers.

The media need superheroes in science just as in every sphere of life, but there is really a continuous range of abilities with no clear dividing line.

Life would be tragic if it weren't funny.

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.

I want to know why the universe exists, why there is something greater than nothing.

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

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