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.
“Whether it's people walking off 'The View' when Bill O'Reilly makes a statement about radical Islam or Juan Williams being fired for expressing his opinion, over-reaching political correctness is chipping away at the fundamental American freedoms of speech and expression.”
“In terms of the way people see me, it breaks down into two very clear and distinct groups: those who think they know me from reading the papers and those who really know me by reading my books.”