Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
Moreover, if the class of legal experts is as a rule drawn from those who, in despair of making successful pleaders, have taken refuge with the law, how easy it must be for an orator to know what those succeed in learning, who by their own confession are incapable of becoming orators! But Marcus Cato was at once a great orator and an expert lawyer, while Scaevola and Servius Sulpicius
v10-12 p.407
were universally allowed to be eloquent as well. [*](i. e. as well as experts on the law. )