Paradoxes are apparently good arguments that lead to conclusions that are beyond belief (Greek: “para” = beyond, “doxa” = belief).It is probably just a quibble, but the Oxford Dictionary of English Etymology has it as "contrary to received opinion." Doxa, which means "opinion," in fact derives from dokein, which means "to seem, appear, think." The word dogma also derives from doxa. A dogma is a settled opinion. Interesting implications at work here, I would guess.