Accordingly, the first essential is that those feelings should prevail with us that we wish to prevail with the judge, and that we should be moved ou… - Quintilian

Nihil enim rerum ipsa natura voluit magnum effici cito, praeposuitque pulcherrimo cuique operi difficultatem: quae nascendi quoque hanc fecerit legem, ut maiora animalia diutius visceribus parentis continerentur.

But I fancy that I hear some (for there will never be wanting men who would rather be eloquent than good) saying "Why then is there so much art devoted to eloquence? Why have you given precepts on rhetorical coloring and the defense of difficult causes, and some even on the acknowledgment of guilt, unless, at times, the force and ingenuity of eloquence overpowers even truth itself? For a good man advocates only good causes, and truth itself supports them sufficiently without the aid of learning."

Laudem virtutis necessitati damus.