Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
And it is for the same reason that Cicero in several of his books and letters proclaims that eloquence has its fountain-head in the most secret springs of wisdom, and that consequently for a considerable time the instructors of morals and of eloquence were identical. Accordingly this exhortation of mine must not be taken to mean that I wish the orator to be a philosopher, since there is no other way of life that is further removed from the duties of a statesman and the tasks of an orator.
For what philosopher has ever been a frequent speaker in the courts or won renown in public assemblies? Nay, what philosopher has ever taken a prominent part in the government of the state, which forms the most frequent theme of their instructions? None the less I desire that he, whose character I am seeking to mould, should be a
wise manin the Roman sense, that is, one who reveals himself as a true statesman, not in the discussions of the study, but in the actual practice and experience of life.