Plato's Essentialism: Reinterpreting the Theory of Forms by Vasilis Politis

Abstract

Reviewed by: Plato's Essentialism: Reinterpreting the Theory of Forms by Vasilis Politis Travis Butler POLITIS, Vasilis. Plato's Essentialism: Reinterpreting the Theory of Forms. New York: Cambridge University Press, 2021. x + 251 pp. Cloth, $99.99 The reinterpretation of the theory of forms to which Politis refers in this book's subtitle is accomplished by foregrounding the conception of forms as essences—the kinds of beings we must countenance if we pose, pursue, and believe we can answer the "What is F?" question. Politis argues that some of Plato's arguments for introducing forms have been distorted by the assumption that he is primarily interested in the Aristotelian question about substance or a Parmenidean quest for stable objects of thought and knowledge. By focusing on forms as the targets of the "What is F?" [End Page 154] question, we can dispel these misconceptions and bring the Platonic theory more clearly into view. Chapter 1 includes the cornerstone of Politis' interpretation—an original reading of a brief passage in the Hippias Major. Hippias is an important interlocutor for the project because he holds that the "What is F?" question can be answered by asking instead, "Which things exemplify F?" Let's call the claim that "What is F?" can be answered by examples "The Exemplar Doctrine" (ED). Politis argues that Hippias' commitment to ED leads him to deny the existence of a single exemplar for all cases—a denial he is forced subsequently to rescind. Thus, by endorsing the search for exemplars over the search for essence, Hippias sows the seeds of his own refutation. Readers might wonder how an account of a brief passage in the Hippias Major, apparently innocent of transcendent metaphysics, could serve as the cornerstone of a reinterpretation of the theory of forms. The initial answer in chapter 2 is that the rejection of ED is taken to imply that forms are imperceptible. The implication follows because Politis takes the supposition that F is definable by example to be biconditionally related to the claim that the essence of F is perceivable by the senses. When Socrates gets Hippias to reject ED, then, he gets him (tacitly) to accept that the essence of F is not perceivable by the senses. A central tenet of Platonism, the imperceptibility of forms, thus follows from an initial point about the proper way to answer the "What is F?" question. Chapter 3 continues in a similar vein, arguing that many special features attributed to forms in the Phaedo and Republic, such as their unity, uniformity, and incompositeness, follow from facts about inquiry into essences. Politis argues that these features belong, in the first instance, to defining accounts of forms and only secondarily to the forms themselves. Skeptical readers might observe that the focus in the Phaedo is much more on the forms than on defining accounts of them. In addition, it should be noted that the list of special features on which Politis focuses is somewhat selective. Chapters 2 and 3 include no discussion of the divinity and purity of forms or their status as alone by themselves. The divinity of forms is crucial for their role in Plato's ethics, but it seems unlikely to be explained by anything related to the "What is F?" question. In chapter 4, Politis defends a novel account of the epistemology of the Phaedo. He argues that it should be viewed through the lens of the account of inquiry in that dialogue, though not the central notion of inquiring with the soul by itself. Instead, we should focus on the passage in which Socrates claims that sense perception of deficiently equal sticks puts us in mind (ennoēsai) of the equal itself (74c–75b). Politis takes this claim to imply that sense perception plays a justificatory and not merely causal role in acquiring knowledge, though the textual arguments of this chapter fall short of establishing that striking claim. Chapter 5 takes on arguments in the Phaedo and Republic that appear to distinguish forms from sensibles on the grounds that the latter but not the former suffer the compresence of opposites (for example, appearing [End Page 155] both equal and unequal). Politis argues that scholars...