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. HeinleinWhen a place gets crowded enough to require ID's, social collapse is not far away. It is time to go elsewhere. The best thing about space travel is that it made it possible to go elsewhere.
Robert A. HeinleinCivilians are like beans; you buy 'em as needed for any job which merely requires skill and savvy. But you can't buy fighting spirit.
Robert A. Heinlein