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.

Today I continue with my science-fiction reading habit and find it very mind-expanding. Always makes me think.

I dwell in possibility.

Scientific views end in awe and mystery, lost at the edge in uncertainty, but they appear to be so deep and so impressive that the theory that it is all arranged as a stage for God to watch man’s struggle for good and evil seems inadequate.

The most watched programme on the BBC, after the news, is probably ‚Doctor Who.‘ What has happened is that science fiction has been subsumed into modern literature. There are grandparents out there who speak Klingon, who are quite capable of holding down a job. No one would think twice now about a parallel universe.

I put instant coffee in a microwave oven and almost went back in time.

Without deviation progress is not possible.

Science fiction is any idea that occurs in the head and doesn’t exist yet, but soon will, and will change everything for everybody, and nothing will ever be the same again. As soon as you have an idea that changes some small part of the world you are writing science fiction. It is always the art of the possible, never the impossible.

It is theoretically possible to warp spacetime itself, so you’re not actually moving faster than the speed of light, but it’s actually space that’s moving.

I understand a ship to be made for the carrying and preservation of the cargo, and so long as the ship can be saved, with the cargo, it should never be abandoned. This Union likewise should never be abandoned unless it fails and the possibility of its preservation shall cease to exist, without throwing passengers and cargo overboard.

The dominant theory coming out of Hollywood is that peoples‘ attention spans are getting shorter and shorter and they need more stimulation.

Individual science fiction stories may seem as trivial as ever to the blinder critics and philosophers of today – but the core of science fiction, its essence has become crucial to our salvation if we are to be saved at all.

I was afraid that science-fiction buffs and everybody would say things like, ‚You know, there’s no sound in outer space.‘

Any sufficiently advanced technology is indistinguishable from magic.

If it looks like a duck, and quacks like a duck, we have at least to consider the possibility that we have a small aquatic bird of the family anatidae on our hands.

Is evolution a theory, a system, or an hypothesis? It is much more: it is a general condition to which all theories, all hypotheses, all systems must bow and which they must satisfy henceforward if they are to be thinkable and true.

Evolution was far more thrilling to me than the biblical account. Who would not rather be a rising ape than a falling angel? To my juvenile eyes, Darwin was proved true every day. It doesn’t take much to make us flip back into monkeys again.

If people take anything from my music, it should be motivation to know that anything is possible as long as you keep working at it and don’t back down.

I think it would be interesting if old people got anti-Alzheimer’s disease where they slowly began to recover other people’s lost memories.

All theory is against freedom of the will; all experience for it.

Experience without theory is blind, but theory without experience is mere intellectual play.

Politicians should read science fiction, not westerns and detective stories.

It was Einstein’s dream to discover the grand design of the universe, a single theory that explains everything. However, physicists in Einstein’s day hadn’t made enough progress in understanding the forces of nature for that to be a realistic goal.

Where ignorance is our master, there is no possibility of real peace.

There are certain people who elicit a really passionate response. It’s crazy. That’s my Alexander Wang theory.

Today, all physicists know from studying Einstein and Bohr that sometimes an idea which looks completely paradoxical at first, if analyzed to completion in all detail and in experimental situations, may, in fact, not be paradoxical.

Let your religion be less of a theory and more of a love affair.

When I write about a 15-year old, I jump, I return to the days when I was that age. It’s like a time machine. I can remember everything. I can feel the wind. I can smell the air. Very actually. Very vividly.

Science is global. Einstein’s equation, E=mc2, has to reach everywhere. Science is a beautiful gift to humanity, we should not distort it. Science does not differentiate between multiple races.

Because a thing seems difficult for you, do not think it impossible for anyone to accomplish.

Democracy is the theory that the common people know what they want, and deserve to get it good and hard.

The mere thought hadn’t even begun to speculate about the merest possibility of crossing my mind.

Time travel was once considered scientific heresy, and I used to avoid talking about it for fear of being labelled a ‚crank.‘

If I pick up a book with spaceships on the cover, I want spaceships. If I see one with dragons, I want there to be dragons inside the book. Proper labeling. Ethical labeling. I don’t want to open up my cornflakes and find that they’re full of pebbles… You need to respect the reader enough not to call it something it isn’t.

Science fiction writers foresee the inevitable, and although problems and catastrophes may be inevitable, solutions are not.

I cannot discover that anyone knows enough to say definitely what is and what is not possible.

An ounce of action is worth a ton of theory.

I have just got a new theory of eternity.

I’ve only written one science-fiction book: ‚Fahrenheit 451.‘ That book is a book based on real facts and my hatred of people who destroy books.

M-theory is the unified theory Einstein was hoping to find.

The first stories I wrote when I was 12 were about Mars and landing on Mars.

I got into science fiction by being interested in astronomy first.

The situation in the sciences is this: A concept or an idea which cannot be measured or cannot be referred directly to experiment may or may not be useful. It need not exist in a theory.

When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong.

It’s perfectly obvious that there is some genetic factor that distinguishes humans from other animals and that it is language-specific. The theory of that genetic component, whatever it turns out to be, is what is called universal grammar.

It has yet to be proven that intelligence has any survival value.

Read no history: nothing but biography, for that is life without theory.

It doesn’t matter how beautiful your theory is, it doesn’t matter how smart you are. If it doesn’t agree with experiment, it’s wrong.

The theory seems to be that as long as a man is a failure he is one of God’s children, but that as soon as he succeeds he is taken over by the Devil.

We wind a simple ring of iron with coils; we establish the connections to the generator, and with wonder and delight we note the effects of strange forces which we bring into play, which allow us to transform, to transmit and direct energy at will.

The root of this possibility of doing good – that we all have – is in creation.

Bayern want a decade of success like Barca. That’s OK if you have the money because it increases the possibility of success. But it’s not guaranteed.

Science fiction, to me, has not only things that wouldn’t happen, but other planets.

Religion is essentially the art and the theory of the remaking of man. Man is not a finished creation.

Creationists make it sound as though a ‚theory‘ is something you dreamt up after being drunk all night.

There is no body of theory or significant body of relevant information, beyond the comprehension of the layman, which makes policy immune from criticism.

If you look at ‚Blade Runner,‘ it’s been cut sixteen ways from Sunday, and there are all kinds of different versions of it.

I read ‚The High Frontier‘ in high school. I read it multiple times, and I was already primed. As soon as I read it, it made sense to me. It seemed very clear that planetary surfaces were not the right place for an expanding civilization inside our solar system.

There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened.

I have a theory that the truth is never told during the nine-to-five hours.

Millions of students now, in all the schools of America, are reading science fiction and especially, thank God, ‚The Martian Chronicles.‘