Morals - all correct moral laws - derive from the instinct to survive. Moral behavior is survival behavior above the individual level.
Robert A. HeinleinIt is possible that the percentage of honest and competent whores is higher than that of plumbers and much higher than that of lawyers. And enormously higher than that of professors.
Robert A. HeinleinYou have to give an editor something to change, or he gets fretful. After he pees in it, he likes the flavor better, so he buys it.
Robert A. HeinleinFormal courtesy between husband and wife is even more important than it is between strangers.
Robert A. HeinleinI believe that this hairless embryo with the aching, oversize brain case and the opposable thumb, this animal barely up from the apes, will endure --will endure longer than his home planet, will spread out to the other planets, to the stars, and beyond, carrying with him his honesty, his insatiable curiosity, his unlimited courage --and his noble essential decency. This I believe with all my heart.
Robert A. Heinlein