It is said by our opponent that no one is ungrateful; and this is supported by the following arguments: “A benefit is that which does good; but, as you Stoics say, no one can do good to a bad man; therefore, a bad man does not receive a benefit. (If he does not receive it, he need not return it; therefore, no bad man is ungrateful.) Furthermore, a benefit is an honourable and commendable thing. No honourable or commendable thing can find any place with a bad man; therefore, neither can a benefit. If he cannot receive one, he need not repay one; therefore, he does not become ungrateful. Moreover, as you say, a good man does everything rightly; if he does everything rightly, he cannot be ungrateful. A good man returns a benefit, a bad man does not receive one. If this be so, no man, good or bad, can be ungrateful. Therefore, there is no such thing in nature as an ungrateful man: the word is meaningless.” We Stoics have only one kind of good, that which is honourable. This cannot come to a bad man, for he would cease to be bad if virtue entered into him; but as long as he is bad, no one can bestow a benefit upon him, because good and bad are contraries, and cannot exist together. Therefore, no one can do good to such a man, because whatever he receives is corrupted by his vicious way of using it.