The Review of Metaphysics

One doesn't need to search to find criticism of contemporary democratic citizens. We are told we are an ignorant, dogmatic, and generally vicious bunch. These traits, it's natural to think, make trouble for our democracy. One solution, Mason Marshall argues, is to read Plato to reform our vicious tendencies. This might be surprising, considering Plato is sometimes portrayed as a great enemy of democracy. But Marshall doesn't propose to read Plato to find out what Plato thought, or to mine his dialogues for promising arguments. Rather, Marshall proposes to read Plato to develop a theory of philosophical protreptic. "Protreptic," as used by Marshall, means to turn someone toward a new end. And thus, philosophical protreptic is turning someone "so that they want truth more than anything else." The idea, then, is to use Plato to protrepticize students, in order to cultivate democracy-required character traits in students.

There are, broadly speaking, two parts to the book. Marshall, in one part, sketches two ways of carrying out his project, a top-down approach (chapter 1) and a bottom-up approach (chapter 2), before putting the project in action to illustrate its value (chapter 5). In the second part of the book, Marshall defends his project from the charge that it's an illegitimate approach to Plato scholarship (chapter 3) and from the charge that his approach would not be sufficiently valuable (chapter 4). Surprisingly, given the stated aim of the book, chapters 3 and 4 take up the bulk of the pages. I offer an explanation of this striking feature below. But first, I follow Marshall's structure in summarizing the two parts.

Marshall begins with the top-down approach. The reader would suppose that above all else Socrates aims to foster self-examination in his interlocutors, before imagining various strategies Socrates could have pursued to satisfy this end. The reader evaluates the various imagined strategies, not for whether they are the ones Socrates uses in the text but for how well they would achieve the end. For example, one might think that Socrates, in order to protrepticize Euthyphro, must convince Euthyphro that he needs to be able to cogently answer philosophical questions, if only so that he does not look foolish when facing them. The reader would then sketch thought experiments varying along the axis of harshness—how abrasive Socrates' humiliation of Euthyphro must be—before evaluating which scenario would most likely lead to self-examination.

The bottom-up approach proceeds in the opposite order: One starts by wondering what the intermediate ends motivating Socrates' actual behavior in the dialogues could be. For example, one would ask why Socrates muddies the waters in offering convoluted definitions of piety in the Euthyphro (11e7–12d4). It could be that Socrates wants to make Euthyphro look silly, that Socrates wants to overwhelm him, or that Socrates wants Euthyphro to agree to a view Socrates is anxious to refute. It could be all three. But the idea is to identify the strategies that make the [End Page 353] most sense of the supposition that Socrates aims, above all else, to foster self-examination, before evaluating them for their likelihood of turning someone to self-examination.

Marshall, in the second part of the book, defends his approach from the objection that, since his project isn't aiming to articulate the content of Plato's mental states, or mining for arguments, he is co-opting Plato illegitimately. The basic defense is that we would have to know much more about Plato's intentions than we do for the charge to stick. In short, given that we are largely unable to articulate the assumptions we have regarding what goods an interpretation of a text will win us, we will be unable to arbitrate between radically different, yet internally coherent, interpretations of Plato.

It is initially puzzling why Marshall spends...