and rightly considered it is thought vulgar.1 But since the whole business of Rhetoric is to influence opinion,2 we must pay attention to it, not as being right, but necessary; for, as a matter of right, one should aim at nothing more in a speech than how to avoid exciting pain or pleasure. For justice should consist in fighting the case with the facts alone, so that everything else that is beside demonstration is superfluous; nevertheless, as we have just said, it is of great importance owing to the corruption of the hearer.
