Grandfather Paradox Quotes

If time travel were possible, you still wouldn't be able to change the past - it's already happened!

I have experimental evidence that time travel is not possible.

Whether you can go back in time is held in the grip of the law of quantum gravity.

Originally, the burden of proof was on physicists to prove that time travel was possible. Now the burden of proof is on physicists to prove there must be a law forbidding time travel.

Travel at faster than the speed of light certainly can have dramatic implications that are difficult to understand, such as time travel.

If time travel is possible, where are the tourists from the future?

People who think about time travel stories sometimes think that going back in time would be fun because you would have all the information you needed to be much more astute than the people there, when the truth is of course you wouldn't.

The simplest way out of the puzzle of time travel is to say that it can't be done. That's very likely the right answer. However, we don't know for sure.

I think time travel is really tricky. But if there's a logic and a complete and well-thought-through paradigm for it, I think it can be really interesting. Some of my favorite time-travel movies just make me think and, you know, the 'what if' question becomes a big one.

Time travel is possible. Will explain later

I know, on 'Rick and Morty,' we had the time where they unfreeze time, and they're in trouble because of it. The time starts splitting. That episode, we got a little too focused on 'how,' the hows and the science behind it, and oh my God, it was - it was spiraling us for sure.

I think the idea of time travel is very seductive.

Time travel may be achieved one day, or it may not. But if it is, it should not require any fundamental change in world-view, at least for those who broadly share the world view I am presenting in this book.

Time travel, by its very nature, was invented in all periods of history simultaneously.

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 find the whole time travel question very unsettling if you take it to its logical extension. I think it might eventually be possible, but then what happens?

Time travel is a wonderful thing, isn't it?

I've always been a big fan of time travel, and I'm very into the notion that some day we'll be able to do it. Beam me up!

One of the major problems encountered in time travel is not that of accidentally becoming your own father or mother. There is no problem involved in becoming your own father or mother that a broadminded and well-adjusted family can't cope with.

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

Time travel offends our sense of cause and effect - but maybe the universe doesn't insist on cause and effect.

If you have a wormhole, then you can turn them into time machines for going backward in time.

Time travel may be possible, but it is not practical.

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

Thinking about time travel may seem like something humans have been doing since the first caveman dropped the first rock on his foot. But, even to begin to imagine the possibility of time travel, your mind must be able to wrap itself around the notion of a past and a future.