41. It would be tedious to go over all the rest in this way; for the speech of the vulgar makes use of them all, even of those more curious figures which mean the very opposite of what they say, as for example, those called irony and antiphrasis. Now in irony we indicate by the tone of voice the meaning we desire to convey; as when we say to a man who is behaving badly, "You are doing well." But it is not by the tone of voice that we make an antiphrasis to indicate the opposite of what the words convey; but either the words in which it is expressed are used in the opposite of their etymological sense, as a grove is called lucus from its want of light; or it is customary to use a certain form of expression, although it puts yes for no by a law of contraries, as when we ask in a place for what is not there, and get the answer, "There is plenty;" or we add words that make it plain we mean the opposite of what we say, as in the expression, "Beware of him, for he is a good man." And what illiterate man is there that does not use such expressions, although he knows nothing at all about either the nature or the names of these figures of speech? And yet the knowledge of these is necessary for clearing up the difficulties of Scripture; because when the words taken literally give an absurd meaning, we ought forthwith to inquire whether they may not be used in this or that figurative sense which we are unacquainted with; and in this way many obscure passages have had light thrown upon them.