The country and culture commonly known as "America" had had a badly split personality all through its history. Its overt laws were almost always puritanical for a people whose covert behavior tended to be Rabelaisian; its major religions were all Apollonian in varying degrees---its religious revivals were often hysterical in a fashion almost Dionysian.
Robert A. HeinleinTake sex away from people. Make it forbidden, evil. Limit it to ritualistic breeding. Force it to back up into suppressed sadism. Then hand the people a scapegoat to hate. Let them kill a scapegoat occasionally for cathartic release. The mechanism is ages old. Tyrants used it centuries before the word "psychology" was ever invented. It works, too.
Robert A. HeinleinMorals - all correct moral laws - derive from the instinct to survive. Moral behavior is survival behavior above the individual level.
Robert A. HeinleinSince survival is the sine qua non, I now define the "moral behavior" as "behavior that tends toward survival".
Robert A. HeinleinThere are a dozen different ways of delivering destruction in impersonal wholesale, via ships or missiles of one sort or another, catastrophes so widespread, so unselective that the war is over because that nation or planet has ceased to exist. What we do is entirely different. We make war as personal as a punch in the nose. We can be selective, applying precisely the required amount of pressure at the specified point at a designated time. We've never been told to go down and kill or capture all left-handed redheads in a particular area, but if they tell us to, we can. We will.
Robert A. Heinlein