Every sect is a moral check on its neighbour. Competition is as wholesome in religion as in commerce.
“What convinces is conviction. Believe in the argument you're advancing. If you don't you're as good as dead. The other person will sense that something isn't there, and no chain of reasoning, no matter how logical or elegant or brilliant, will win your case for you.”
“Everyone is going to binge on a diet, for instance, so plan for it, schedule it, and contain the damage.”