Institutio Oratoria

Quintilian

Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.

Philosophers arrive

v1-3 p.353
at this conclusion by a long chain of ingenious arguments; but it appears to me to be perfectly clear from the simpler proof of my own invention which I will now proceed to set forth. The philosophers state the case as follows. If self-consistency as to what should and should not be done is an element of virtue (and it is to this quality that we give the name of prudence), the same quality will be revealed as regards what should be said and what should not be said,

and if there are virtues, of which nature has given us some rudimentary sparks, even before we were taught anything about them, as for instance justice, of which there are some traces even among peasants and barbarians, it is clear that man has been so formed from the beginning as to be able to plead on his own behalf, not, it is true, with perfection, but yet sufficiently to show that there are certain sparks of eloquence implanted in us by nature.