For when they take their pupils in hand, the physical trainers instruct their followers in the postures which have been devised for bodily contests, while the teachers of philosophy impart all the forms of discourse in which the mind expresses itself.

Then, when they have made them familiar and thoroughly conversant with these lessons, they set them at exercises, habituate them to work, and require them to combine in practice the particular things which they have learned, in order that they may grasp them more firmly and bring their theories into closer touch with the occasions for applying them—I say “theories,” for no system of knowledge can possibly cover these occasions, since in all cases they elude our science.The distinction usually drawn, in Plato for instance, between DO/CA and E)PISTH/MH, the one “opinion,” the other “knowledge,” is not exactly that made by Isocrates. DO/CA is here, not irresponsible opinion, but a working theory based on practical experience—judgement or insight in dealing with the uncertain contingencies of any human situation which presents itself. In this realm, he holds, there can be no exact science. Cf. Isoc. 15.271; Isoc. 13.1-3. See General Introd. pp. xxii, xxvii. Yet those who most apply their minds to them and are able to discern the consequences which for the most part grow out of them, will most often meet these occasions in the right way.

Watching over them and training them in this manner, both the teachers of gymnastic and the teachers of discourse are able to advance their pupils to a point where they are better men and where they are stronger in their thinking or in the use of their bodies. However, neither class of teachers is in possession of a science by which they can make capable athletes or capable orators out of whomsoever they please. They can contribute in some degree to these results, but these powers are never found in their perfection save in those who excel by virtue both of talent and of training.For Isocrates' view as to the elements which produce the successful orator see General Introd. p. xxiv.