All human behavior, all human motivations, all manโs hopes and fears, were heavily colored and largely controlled by mankindโs tragic and oddly beautiful pattern of reproduction.
Robert A. HeinleinAnyone who cannot cope with mathematics is not fully human. At best, he is a tolerable subhuman who has learned to wear his shoes, bathe, and not make messes in the house.
Robert A. HeinleinViolence never settles anything should be debated by the ghosts of Hitler and Stalin, with the city fathers of Carthage as referees.
Robert A. Heinlein