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
And Cicero not merely possessed a sufficient supply of legal knowledge to serve his needs when pleading, but actually began to write on the subject, so that it is clear that an orator has not merely time to learn, but even to teach the law.
Let no one, however, regard the advice I have given as to the attention due to the development of character and the study of the law as being impugned by the fact that we are familiar with many who, because they were weary of the toil entailed on those who seek to scale the heights of eloquence, have betaken themselves to the study of law as a refuge for their indolence. Some of these transfer their attention to the praetor's edicts or the civil law, [*]( The piraetor's edicts were displayed on a whitened board ( in albo ), while the headings of the civil law were written in red. ) and have preferred to become specialists in formulae, or legalists, as Cicero [*](de Or. I. iv. 231. ) calls them, on the pretext of choosing a more useful branch of study, whereas their real motive was its comparative easiness.
Others are the victims of a more arrogant form of sloth; they assume a stern air and let their beards grow, and, as though despising the precepts of oratory, sit for a while in the schools of the philosophers, that, by an assumption of a severe mien before the public gaze and by an affected contempt of others they may assert their moral superiority, while leading a life of debauchery at home. For philosophy may be counterfeited, but eloquence never.