The 39th volume of published proceedings of the Boston Area Colloquium in Ancient Philosophy contains five papers and commentaries presented during academic year 2023–24. Topics: Aristotle’s reversal of the argument between Cebes and Socrates in Plato’s Phaedo on the immortality of the human soul; the argument and action of Plato’s Protagoras and the emergence of Socrates as philosopher; Socrates’ education from Diotima in Plato’s Symposium; the apparent absence in Aristotle of the modern understanding of the human subject; a new interpretation of the material influences on daemons according to Iamblichus. The commentators subject each paper to critical review, and they support, challenge, or reject what they find.