H. Beam Piper: Temple Trouble: Miracles to order was a fine way for the paratimers to get mining concessions—but Nature can sometimes pull counter-miracles. And so can men, for that matter...
Jules Verne, H.G. Wells, Edwin Abbott Abbott, Mary Shelley, Robert Louis Stevenson, H. Beam Piper, E. M. Forster, Isaac Asimov, Kurt Vonnegut, Philip Dick, Ray Bradbury & Edgar Rice Burroughs