I think I have completed my essential collection of Loeb books, focussing mainly on Stoic philosophy or at least related to some degree to Stoicism:

• Cicero: Tusculan Disputations
• Cicero: On Duties
• Horace: Odes / Epodes
• Horace: Satires / Letters / Ars Poetica
• Seneca: Moral Essays [3 volumes]
• Seneca: Epistles [3 volumes]
• Seneca: Natural Questions [2 volumes]
• Seneca: Tragedies [2 volumes]
• Lucan: The Civil War
• Epictetus: Discourses / Enceiridion / Fragments [2 volumes]
• Marcus Aurelius: Meditations / Speeches / Sayings
• Boethius: Theological Tractates / The Consolation of Philosophy

And, to round it off, Hackett’s hardback edition of Plato’s complete works. 

I have yet to read Cicero’s Disputations, Lucan, and quite a few of Plato’s dialogues (though my primary interest with Plato is with the earlier ones).

The Loeb translations are quite good I think (some which have been updated), the only exception being Haines’ dreadful translation of Marcus Aurelius from the Greek, written in crabby king’s English.  I hope Harvard is going to do a new translation of it sometime soon—it is well overdue!

In the meantime, I must resist the temptation to buy any other books from the Loeb library! (Vergil, Lucretius, the Greek tragedians)—at least for along time…

I’m slogging very slowly through my beginner Latin lessons, but I still dream of getting to read Seneca in the original Latin one day…