A man who wished to loose himself from the violent foregone conclusions of custom will find many things accepted as being indubitably settled which have nothing to support them but the hoary whiskers and wrinkels of attendance usage; let him tear off that mask, bring matters back to truth and reason, and he will feel his judgement turned upside-down, yet restored by this to a much surer state.
~ Montaigne, The Complete Essays (1587-88)