Whether you can go back in time is held in the grip of the law of quantum gravity. We are several decades away from a definitive understanding, 20 or 30 years, but it could be sooner than that.

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

The right answer is seldom as important as the right question.

Closed timelike curve is the jargon for time travel. It means you go out, come back and meet yourself in the past.

When gravitational waves reach the earth, the waves stretch and squeeze space. This is a tiny stretch and squeeze. Far too small to detect with ordinary human senses.

'Closed timelike curve' is the jargon for time travel. It means you go out, come back and meet yourself in the past.

In goodreads it's hard to find my progress in some stuff like quotes new and it needs a lot of work. But in twitter you can find everything - is it just a theory or a true. You decide!

The biggest obstacle to learning is LISTENING with ears to hear.

Honestly, I do believe in the power of women supporting each other.

It changes your life, the pursuit of truth, if you know that you have tried to find the truth and gone past the first apparent truth towards the real truth. It's very, it's very exciting.

I would say that now I'm somebody who goes to church.

Every moment an epiphany arrives and cleaves the mountain asunder

Controversy, though always an evil in itself, is sometimes a necessary evil.

I think we all have light and dark inside us.

I never loved totalitarianism and all the ideas of making mankind happy always seemed crazy to me.

As people get older, we all know, you get married and you have a child and that becomes your family, but when you're 16 years old, especially, your family is your friends.