Institutio Oratoria

Finally as regards the style, he will emphasise the appropriateness, elegance or sublimity of particular words, will indicate where the amplification of the theme is deserving of praise and where there is virtue in a diminuendo; and will call attention to brilliant metaphors, figures of speech and passages combining smoothness and polish with a general impression of manly vigour.

It will even at times be of value to read speeches which are corrupt and faulty in style, but still meet with general admiration thanks to the perversity of modern tastes, and to point out how many expressions in them are inappropriate, obscure, high-flown, grovelling, mean, extravagant or effeminate, although they are not merely praised by the majority of critics, but, worse still, praised just because they are bad.