You cannot create new science unless you realise where the old science leaves off and new science begins, and science fiction forces us to confront this.

It would take a civilization far more advanced than ours, unbelievably advanced, to begin to manipulate negative energy to create gateways to the past. But if you could obtain large quantities of negative energy-and that's a big "IF" - then you could create a time machine that apparently obeys Einstein's equation and perhaps the laws of quantum theory.

All kids are born geniuses, but are crushed by society.

When I get bored, or get stuck on an equation, I like to go ice skating, but it makes you forget your problem. Then you can tackle the problem with a fresh new insight. Einstein liked to play the violin to relax. Every physicist likes to have a past time. Mine is ice skating.

In some sense, gravity does not exist; what moves the planets and the stars is the distortion of space and time.

[T]he yeoman's work in any science, and especially physics, is done by the experimentalist, who must keep the theoreticians honest.

We're in 'Jurassic Park' territory. If we go to the zoo in the future, we'll have zoos for extinct animals.