Moral Essays, Volume I: De Providentia. De Constantia. De Ira. De Clementia (Loeb Classical Library 214) Hardcover – 1 July 1989

Considerably longer than his letters, Seneca's essays like the letters fill three volumes in the Loeb series. This first features the essays on Providence, Constancy, the series of three considerably longer essays on Anger, and the one and a bit essays (the remainder of the second and the third being lost) on Mercy. The latter albeit incomplete are particularly interesting as they are addressed to Nero, and could be seen as highlighting the apparent contradictions in Seneca's character as a Stoic and yet flattering a tyrant, or else could possibly even be seen as showing a side to Nero's character which is well less known. Valuable reading for anyone interested in Stoicism.