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.
“The most important issue is clearly not the quality of treatment and care of these prisoners; rather it is the perplexing issue of what we now do with them.”
“For I do not seek to understand in order to believe, but I believe in order to understand. For I believe this: unless I believe, I will not understand.”