Thus the mildest criticism of religion is also the most radical and the most devastating one. Religion is man-made. Even the men who made it cannot agree on what their prophets or redeemers or gurus actually said or did. Still less can they hope to tell us the "meaning" of later discoveries and developments which were, when they began, either obstructed by their religion or denounced by them. And yet — the believers still claim to know! Not just to know, but to know everything. Not just to know that god exists, and that he created and supervised the whole enterprise, but also to know what "he" demands of us — from our diet to our observances to our sexual morality. In other words, in a vast and complicated discussion where we know more and more about less and less, yet can still hope for some enlightenment as we proceed, one faction — itself composed of warring factions — has the sheer arrogance to tell us that we already have all the essential information we need. Such stupidity, combined with such pride, should be enough on its own to exclude "belief" from the debate. The person who is certain, and who claims divine warrant for his certainty, belongs now to the infancy of our species. It may be a long farewell, but it has begun and, like all farewells, should not be protracted.