More quotes by Robert A. Heinlein

"One man's theology is another man's belly laugh."
"Women and cats will do as they please, and men and dogs should relax and get used to the idea."
"Anyone 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."
"A poet who reads his verse in public may have other nasty habits."
"Never attribute to malice that which can be adequately explained by stupidity."