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

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.

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.

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.

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

Kind deed is a seed of love.

there is only this world, as it is now, and there has never been another, can never be any other.

At no moment in history has a bright young girl with plenty of food and a good constitution perished from too much learning.

Don’t depend on the thoughts

Frailty, thy name is woman!—A little month, or ere those shoes were oldWith which she follow'd my poor father's body, Like Niobe, all tears:—

Paddy was in the delivery room when the midwife handed him a black baby. "Is this yours?" she asked "probably" said Paddy "she burns everything else"

He knew one thing for sure, though. Whatever happened, Matt would have some handy excuse. He'd make up some story or change an old one, find some dumb quote to explain it all.

Illustrious acts high raptures do infuse, And every conqueror creates a muse.

I don't want a lot of good investments; I want a few outstanding ones.

It's hard to break through the clutter of fighters out there trying to get attention.