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. StoneEvery man is his own Pygmalion, and spends his life fashioning himself. And in fashioning himself, for good or ill, he fashions the human race and its future.
I. F. Stone