An animal so poor in spirit that he won't even fight on his own behalf is already an evolutionary dead end; the best he can do for his breed is to crawl off and die, and not pass on his defective genes.
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. HeinleinThere are things which cannot be taught in ten easy lessons, nor popularized for the masses; they take years of skull sweat.
Robert A. Heinlein