A Quote by Stephen Hawking

I have experimental evidence that time travel is not possible.

Stephen Hawking

Quote Topics

Evidence Experimental Possible Time Time Travel Travel

Quote Author

Stephen Hawking
English - Physicist
January 8, 1942 - March 14, 2018

If we could travel into the past, it's mind-boggling what would be possible. For one thing, history would become an experimental science, which it certainly isn't today. The possible insights into our own past and nature and origins would be dazzling. For another, we would be facing the deep paradoxes of interfering with the scheme of causality that has led to our own time and ourselves. I have no idea whether it's possible, but it's certainly worth exploring.

Carl Sagan

Today, we know that time travel need not be confined to myths, science fiction, Hollywood movies, or even speculation by theoretical physicists. Time travel is possible. For example, an object traveling at high speeds ages more slowly than a stationary object. This means that if you were to travel into outer space and return, moving close to light speed, you could travel thousands of years into the Earth's future.

Clifford A. Pickover

With ignorant masses, the travel back in time is not only a possible travel, but it is the only travel!

Mehmet Murat Ildan

If you wanted to travel backwards in time, you're out of luck. We have theories on how it might be possible to do so, but they all involve wormholes and black holes and other stuff that would probably kill you. If you want to travel forward in time, you just have to go really fast.

Kyle Hill

Unlike some of the time-travel movies I love, like 'Primer' or '12 Monkeys,' 'Looper' is not about time travel. It's about this situation that time travel creates and the people dealing with that situation. So narratively, the big challenge was to have time travel get out of the way.

Rian Johnson

I love to read and teach experimental fiction but yes, neither this work nor my first novel is really that experimental. It uses some experimental techniques but in the end, I would not say that it is experimental. I'm not sure why. I do a lot of writing on my own, and I have always just written this way.

Porochista Khakpour

The best evidence that time travel is impossible is the fact that we haven't been invaded by hordes of tourists from the future.

Guillaume Musso

Experimental evidence is the final arbiter of right and wrong.

Brian Greene

[It] is no longer a matter of taste or opinion...it is plain experimental evidence.

Jerome Lejeune

I like the sci-fi channel. Just science in general. I came across a segment on time travel and how time travel is possible. We create a spaceship that's moving at almost the speed of light, we go in that spaceship in outer space, and we fly around for a year, when we get back to Earth, Earth would've aged 10 years.

Von Miller

I define science fiction as fiction in which things happen that are not possible today - that depend, for instance, on advanced space travel, time travel, the discovery of green monsters on other planets or galaxies, or that contain various technologies we have not yet developed.

Margaret Atwood

The statement "I am in pain" may be one piece of evidence for the conclusion that the speaker is in pain, but it is not the only possible evidence, and since people sometimes tell lies, not even the best possible evidence. Even if there were stronger grounds for refusing to attribute pain to those who do not have language, the consequences of this refusal might lead us to reject the conclusion. Human infants and young children are unable to use language. Are we to deny that a year-old child can suffer?

Peter Singer

Finney is about the best writer of time travel stories ever, and I adore time travel stories - have to make a time travel game someday!

Warren Spector

Trust me: you make a movie about time travel, and you know for a fact humans will never travel through time. The paradoxes that come up just from trying to tell a story with time travel really illuminates the fact that it's impossible. It will never happen. We can barely get through a movie that involves time travel.