A Companion to Ancient Philosophy is a collection of essays on a broad range of themes and figures spanning the entire period extending from the Pre-Socratics to Plato, Aristotle, and the Hellenistic thinkers. 

Rather than offering synoptic and summary treatments of preestablished positions and themes, these essays engage with the ancient texts directly, focusing attention on concepts that emerge as urgent in the readings themselves and then clarifying those concepts interpretively. Indeed, this is a companion volume that takes a very serious and considered approach to its designated task—accompanying readers as they move through the most crucial passages of the infinitely rich and compelling texts of the ancients. Each essay provides a tutorial in close reading and careful interpretation. 

Because it offers foundational treatments of the most important works of ancient philosophy and because it, precisely by doing so, arrives at numerous original interpretive insights and suggests new directions for research in ancient philosophy, this volume should be of great value both to students just starting off reading the ancients and to established scholars still fascinated by philosophy's deepest abiding questions.
 

In Philosophy as Agôn: A Study of Plato's Gorgias and Related Texts, Robert Metcalf offers a fresh interpretation of Plato's dialogues as dramatic texts whose philosophy is not so much a matter of doctrine as it is a dynamic, nondogmatic, and open-ended practice of engaging others in agonistic dialogue.

Metcalf challenges prevailing interpretations according to which the agôn (contest or struggle) between the interlocutors in the dialogues is inessential to Plato's philosophical purpose, or simply a reflection of the cultural background of ancient Greek life. Instead, he argues that Plato understands philosophy as essentially agonistic—involving the adversarial engagement of others in dialogue such that one's integrity is put to the test through this engagement, and where the agôn is structured so as to draw adversaries together in agreement about the matters at issue, though that agreement is always open to future contest.

Based on a careful reading of the Gorgias and related Socratic dialogues, such as Apology and Theaetetus, Metcalf contends that agôn is indispensable to the critique of prevailing opinions, to the transformation of the interlocutor through shame-inducing refutation, and to philosophy as a lifelong training (askêsis) of oneself in relation to others.