Antidosis

Again, suppose the case of men who, having mastered the art of war, did not use their skill against the enemy, but rose up and slew many of their fellow-citizens; or suppose the case of men who, having been trained to perfection in the art of boxing or of the pancration, kept away from the games and fell foul of the passers-by; would anyone withhold praise from their instructors instead of putting to death those who turned their lessons to an evil use?[*](The same point is made in Isoc. 3.3-4. Cf. Aristot. Rh. 1355b.)

We ought, therefore, to think of the art of discourse just as we think of the other arts, and not to form opposite judgements about similar things, nor show ourselves intolerant toward that power which, of all the faculties which belong to the nature of man, is the source of most of our blessings. For in the other powers which we possess, as I have already said on a former occasion,[*](Cf. Isoc. 4.48.) we are in no respect superior to other living creatures; nay, we are inferior to many in swiftness and in strength and in other resources;

but, because there has been implanted in us the power to persuade each other and to make clear to each other whatever we desire, not only have we escaped the life of wild beasts, but we have come together and founded cities and made laws and invented arts; and, generally speaking, there is no institution devised by man which the power of speech has not helped us to establish.