We use more discriminating intelligence when we buy a used car than when we buy a religion. Buying a used car you at least look underneath the hood, hit the tires, maybe take it to a mechanic to check it out. But in buying a religion you're supposed to wear these narrow blinders, so that if anybody disagrees you can block it out. It's basically, check your brains at the door when you join a religion.

Bellamy, Dodie (June 22, 1995). "Hi Fubbi, this is Gakko: Former Eckankar Member Revisits the Movement". San Diego Reader.