Theaetetus
Plato
The Trial and Death of Socrates: Euthyphro, Apology, Crito, ...
Plato & John Madison Cooper
Stoic Six Pack 6: The Cyrenaics
Xenophon & Marcus Tullius Cicero & Diogenes Laërtius & Plato & William Smith
Stoic Six Pack 7: The Sophists
William de Witt Hyde & Plato & William Smith & Henry Sidgwick