“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.”
(Translation: El viatge en el temps solia ser pensat com només ciència ficció, però la teoria general de la relativitat d’Einstein permet la possibilitat que podríem deformar l’espai-temps tant que podries sortir en un coet i tornar abans de sortir.)
My favourite Dr Hawking’s sentence is this one because I think it is real the time travels and my wish is watch my grandparents for a last time.
