Book 6
9.105
They hold, further, that virtue can be taught, as Antisthenes maintains in his Heracles, and when once acquired cannot be lost; and that the wise man is worthy to be loved, impeccable, and a friend to his like; and that we should entrust nothing to fortune. Whatever is intermediate between Virtue and Vice they, in agreement with Ariston of Chios, account indifferent.
9.105
So much, then, for the Cynics. We must now pass on to the Stoics, whose founder was Zeno, a disciple of Crates.