Institutio Oratoria

But as regards the practice of rhetoric, it is not merely the case that the trained speaker will get the better of the untrained. For even the trained man will prove inferior to one who has received a better training. If this were not so, there would not be so many rhetorical rules, nor would so many great men have come forward to teach them. The truth of this must be acknowledged by everyone, but more especially by us, since we concede the possession of oratory to none save the good man. [*](i.e. since our ideals are so high. )

Some arts, however, are based on examination, that is to say on the knowledge and proper appreciation of things, as for instance astronomy,

Thirdly there are others which consist in producing a certain result and achieve their purpose in the completion of a visible task: such we style productive, and painting may be quoted as an illustration. In view of these facts we must come to the conclusion that, in the main, rhetoric is concerned with action; for in action it accomplishes that which it is its duty to do.

This view is universally accepted, although in my opinion rhetoric draws largely on the two other kinds of art. For it may on occasion be content with the mere examination of a thing. Rhetoric is still in the orator's possession even though he be silent, while if he gives up pleading either designedly or owing to circumstances over which he has no control, he does not therefore cease to be an orator, any more than a doctor ceases to be a doctor when he withdraws from practice.