"SAY that a thing is so, according to the Pope or the Bible, and it will be dismissed as a superstition without examination. But preface your remark merely with "they say" or "don't you know that?" or try (and fail) to remember the name of some professor mentioned in some newspaper; and the keen rationalism of the modern mind will accept every word you say."
~G.K. Chesterton: The Superstition of Divorce