How then do we admit that virtue is such as I have said, and yet seek progress in other things and make a display of it? What is the product of virtue? Tranquillity. Who then makes improvement? It is he who has read many books of Chrysippus? But does virtue consist in having understood Chrysippus? If this is so, progress is clearly nothing else than knowing a great deal of Chrysippus. But now we admit that virtue produces one thing. and we declare that approaching near to it is another thing, namely, progress or improvement. "Such a person," says one, "is already able to read Chrysippus by himself." Indeed, sir, you are making great progress. What kind of progress?