“He [Professor Weston, i.e. the antagonist] was a man obsessed with the idea which is at this moment circulating all over our planet in obscure works of “scientifiction,” in little Interplanetary Societies and rocketry Clubs, and between the covers of monstrous magazines, ignored or mocked by the intellectuals, but ready, if ever the power is put into its hands, to open a new chapter of misery for the universe. It is the idea that humanity, having now sufficiently corrupted the planet where it arose, must at all costs contrive to seed itself over a larger area: that the vast astronomical distances which are God’s quarantine regulations, must somehow be overcome. This for a start. But beyond this lies the sweet poison of the false infinite — the wild dream that planet after planet, system after system, in the end galaxy after galaxy, can be forced to sustain, everywhere and for ever, the sort of life which is contained in the loins of our own species — a dream begotten by the hatred of death upon the fear of true immortality, fondled in secret by thousands of ignorant men and hundreds who are not ignorant. The destruction or enslavement of other species in the universe, if such there are, is to these minds a welcome corollary” (C. S. Lewis, Perelandra, 81-82).