Customs, morals--is there a difference? Author: Robert A. Heinlein Copy Quote More from Robert A. Heinlein “A generation which ignores history has no past — and no future.” “- I'm so busy doing what I must do that I don't have time for what I ought to d…” “Listen, son. Most women are damn fools and children. But they've got more range…” “I was no fool; I was aware that when another man is too anxious to force money …”