I found this quote on a discussion thread. Does anybody know the source?
"Religion, of course, does make some men better, and perhaps even many men. There can be no doubt of it. But making them better by filling their poor heads with grotesque nonsense is an irrational and wasteful process, and the harm it does greatly outweighs the good. If men could be made better—or even only happier—by teaching them that two and two make five there would be plenty of fools to advocate that method, but it would remain anti-social none the less."