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

The human capacity for guilt is such that people can always find ways to blame themselves

If I knew what was going to happen in ten years I would do it now. I just follow my nose.

To my mathematical brain, the numbers alone make thinking about aliens perfectly rational.

If I had to choose a superhero to be, I would pick Superman. He's everything that I'm not.

Most people don't have time to master the very mathematical details of theoretical physics.

Over a very small number of rolls of the dice, the uncertainty principle is very important.

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

My expectations were reduced to zero when I was 21. Everything since then has been a bonus.

I'm never any good in the morning. It is only after four in the afternoon that I get going.

Perhaps we could write code to optimize code, then run that code through the code optimizer?

I've noticed that even people who believe in fate look both ways before crossing the street.

Government works best under the glare of public scrutiny. Absent such scrutiny, abuses occur.

Because there is a law such as gravity, the Universe can and will create itself from nothing.

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

It now appears that the way the universe began can indeed be determined, using imaginary time.

I had a bet with Gordon Kane of Michigan University that the Higgs particle wouldn't be found.

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

I have wanted to fly into space for many years, but never imagined it would really be feasible.

Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor.

The universe does not behave according to our pre-conceived ideas. It continues to surprise us.

I was not a good student. I did not spend much time at college; I was too busy enjoying myself.

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

Up until the 1920s, everyone thought the universe was essentially static and unchanging in time.

It is all right to make mistakes; nothing is perfect because with perfection, we would not exist.

Science can lift people out of poverty and cure disease. That, in turn, will reduce civil unrest.

There should be no boundaries to human endeavor. However bad life may seem, there is always hope.

Disorder increases with time because we measure time in the direction in which disorder increases.

Sometimes I wonder if I'm as famous for my wheelchair and disabilities as I am for my discoveries.

We each exist for but a short time, and in that time explore but a small part of the whole universe

It is said that there's no such thing as a free lunch. But the universe is the ultimate free lunch.

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

There is no way that we can predict the weather six months ahead beyond giving the seasonal average.

There is no prescribed route to follow to arrive at a new idea. You have to make the intuitive leap.

We explore because we are human and we want to know. I hope that Pluto will help us on that journey.

Galileo, perhaps more than any other single person, was responsible for the birth of modern science.

A lot of prizes have been awarded for showing the universe is not as simple as we might have thought.

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

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

I want to encourage public interest in space. I have never let my condition stop me. You only live once.

Many badly needed goals, like fusion and cancer cure, would be achieved much sooner if we invested more.

What was God doing before the divine creation? Was he preparing hell for people who asked such questions?

You cannot understand the glories of the universe without believing there is some Supreme Power behind it.

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

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

What you have told us is rubbish. The world is really a flat plate supported on the back of a giant tortoise.

Our only chance of long-term survival is not to remain lurking on planet Earth, but to spread out into space.

Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it.

Even if it turns out that time travel is impossible, it is important that we understand why it is impossible.

Doing a job RIGHT the first time gets the job done. Doing the job WRONG fourteen times gives you job security.

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