Cleanthes makes use of the following example:⁠—“I sent,” says he, “two slaves to look for Plato and bring him to me from the Academy. One of them searched through the whole of the colonnade, and every other place in which he thought that he was likely to be found, and returned home alike weary and unsuccessful; the other sat down among the audience of a mountebank close by, and, while amusing himself in the society of other slaves like a careless vagabond as he was, found Plato, without seeking for him, as he happened to pass that way. We ought,” says he, “to praise that slave who, as far as lay in his power, did what he was ordered, and we ought to punish the other whose laziness turned out so fortunate.” It is goodwill alone which does one real service; let us then consider under what conditions it lays us under obligations. It is not enough to wish a man well, without doing him good; nor is it enough to do him good without wishing him well. Suppose that someone wished to give me a present, but did not give it; I have his good will, but I do not have his benefit, which consists of subject matter and goodwill together.