I am re-reading Mr. Russell's History of Western Philosophy and in the chapter titled Stoicism there is a major error. Stoicism, as your reverence knows, is a school of philosophy that deals for the most part in dealing with things calmly, to sum it up succinctly. The strange error he repeats continually as if proud of the discrepuhncy is that the only thing Stoics hold value in is virtue.
The word he is looking for is will. The thing the Stoics thought was most important was a person's will to decide how they would feel about something. His continual use of the word virtue is in error and needs to be mentioned in clear terms. The rest of the book however is really good.