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.
“Do I believe in the supernatural? Oh yes, certainly. I can't believe, I can't accept that you die and that's the end. Physically maybe it is a fact. But there's something about the mind that's more than that.”