Man has no moral instinct. He is not born with moral sense. You were not born with it, I was not - and a puppy has none. We acquire moral sense, when we do, through training, experience, and hard sweat of the mind.
Robert A. HeinleinCast me into a dungeon, burn me at the stake, crown me king of kings, I can 'pursue happiness' as long as my brain lives - but neither gods nor saints, wise men nor subtle drugs, can ensure that I will catch it.
Robert A. HeinleinMust be yearning deep in human heart to stop other people from doing as they please.
Robert A. HeinleinAnyone who clings to the historically untrue-and thoroughly immoral-doctrine that, 'violence never settles anything' I would advise to conjure the ghosts of Napoleon Bonaparte and the Duke of Wellington and let them debate it. The ghost of Hitler could referee, and the jury might well be the Dodo, the Great Auk and the Passenger Pigeon. Violence, naked force, has settled more issues in history than has any other factor, and the contrary opinion is wishful thinking at its worst. Breeds that forget this basic truth have always paid for it with their lives and freedom.
Robert A. Heinlein