You have to take the long view. First, when Moses came down from Mt. Sinai, man has already progressed to the point where a commandment against cannibalism was no longer necessary. And, second, it's like pissing on a boulder. For the first few thousand years, you don't see any effect. But after that, you start to see a definite impact.
I. F. StoneAll governments lie, but disaster lies in wait for countries whose officials smoke the same hashish they give out.
I. F. StoneIf you live long enough, you get accused of things you never did and praised for virtues you never had.
I. F. Stone