This volume, the twenty-seventh year of published proceedings, contains seven papers and commentaries presented to the Boston Area Colloquium in Ancient Philosophy during academic year 2010-11. The paper topics include: number in Philolaus, the injustice of philosophers in Republic VII, Socrates' and Plato's political art in the Gorgias, Aristotle's distinction between two types of knowledge in the Ethics, medical analogies and aporias in Aristotle's account of natural science, place in Aristotle's Physics, and Plotinus' use of light for image and analogy.