When Isocrates, the prince of instructors, whose works proclaim his eloquence no less than his pupils testify to his excellence as a teacher, gave his opinion of Ephorus and Theopompus to the effect that the former needed the spur and the latter the curb, what was his meaning? Surely not that the sluggish temperament of the one and the headlong ardour of the other alike required modification by instruction, but rather that each would gain from an admixture of the qualities of the other.

In the case of weaker understandings however some concession must be made and they should be directed merely to follow the call of their nature, since thus they will be more effective in doing the only thing that lies in their power. But if we are fortunate enough to meet with richer material, such as justifies us in the hope of producing a real orator, we must leave no oratorical virtue uncared for.

For though he will necessarily have a natural bent for some special department of oratory, he will not feel repelled by the others, and by sheer application will develop his other qualities until they equal those in which he naturally excels. The skilled gymnast will once again provide us with a parallel: if he undertakes to train a pancratiast, The pancration was a mixture of wrestling and boxing. he will not merely teach him how to use his fists or his heels, nor will he restrict his instructions to the holds in wrestling, giving special attention to certain tricks of this kind, but will train him in every department of the science. Some will no doubt be incapable of attaining proficiency in certain exercises; these must specialise on those which lie within their powers.

For there are two things which he must be most careful to avoid: first, he must not attempt the impossible, secondly he must not switch off his pupil from what he can do well to exercises for which he is less well suited. But if his pupil is like the famous Nicostratus, whom we saw when he was old and we were boys, he will train him equally in every department of the science and will make him a champion both in boxing and wrestling, like Nicostratus himself who won the prize for both contests within a few days of each other.

And how much more important is the employment of such methods where our future orator is concerned! It is not enough to be able to speak with terseness, subtlety or vehemence, any more than it would be for a singing master to excel in the upper, middle or lower register only, or in particular sections of these registers alone. Eloquence is like a harp and will never reach perfection, unless all its strings be taut and in tune.