Institutio Oratoria

Nor, again, would his words have been greeted with such extraordinary approbation if his speech had been like the ordinary speeches of every day. In my opinion the audience did not know what they were doing, their applause sprang neither from their judgment nor their will; they were seized with a kind of frenzy and, unconscious of the place in which they stood, burst forth spontaneously into a perfect ecstasy of delight.

But rhetorical ornament contributes not a little to the furtherance of our case as well. For when our audience find it a pleasure to listen, their attention and their readiness to believe what they hear are both alike increased, while they are generally filled with delight, and sometimes even transported by admiration. The flash of the sword in itself strikes something of terror to the eye, and we should be less alarmed by the thunderbolt if we feared its violence alone, and not its flash as well.

Cicero was right when, in one of his letters to Brutus, he

Eloquence which evokes no admiration is, in my opinion, unworthy of the name.