Department of Philosophy
Koç University
Rumelifeneri Yolu 34450
Sarıyer / Istanbul-Turkey

Research interests

My research is in ancient philosophy, and I have interests in contemporary ethics—especially virtue ethics—and areas of political philosophy. In ancient philosophy, I've worked on questions in Plato's ethics, psychology, and epistemology, and in particular his views on the nature of belief and perception and how these relate to non-rational cognition. In the past few years I've been looking closely at the images of the Sun, Line, and Cave in Plato's Republic.


‘Should We Unbundle Free Speech and Press Freedom?’ [with Robert Simpson] in C. Fox & J. Saunders (eds) Routledge Handbook of Philosophy and Media Ethics (Routledge, 2023), 69–80 PDF

This paper presents an account of the ethical and conceptual relationship between free speech and press freedom. Many authors have argued that, despite there being some common ground between them, these two liberties should be treated as properly distinct, both theoretically and practically. The core of the argument, for this “unbundling” approach, is that conflating free speech and press freedom makes it too easy for reasonable democratic regulations on press freedom to be portrayed, by their opponents, as part of a programme of illiberal censorship. While we acknowledge the important grain of truth in that argument, we try to show how the alternative, “unbundling” approach can also be used to undermine or mischaracterise democratically justifiable opposition to media regulations in despotic regimes. In light of the problems on both sides, we defend a contextually-variable account of the relation between these two liberties.

Dianoia and Plato's Divided Line’ Phronesis 67 (2022) 253–308

This paper provides a detailed interpretation of the Republic's image of the Divided Line and considers how we should respond to its most contentious implication: that pistis and dianoia have the same degree of ‘clarity and obscurity’ (σαφήνεια καὶ ἀσάφεια). I argue that we cannot avoid or attenuate this conclusion; rather, we should turn our attention to the next question: how can Plato both believe this conclusion and maintain that dianoia is a superior cognitive state to pistis? I argue that this is not only a well-motivated question, but one with an answer that leads us to a deeper understanding of dianoia.

‘The Soul-Turning Metaphor in Plato's Republic Book 7’ Classical Philology 177 (2022) 525–542 PDF

This paper examines the soul-turning metaphor in book 7 of Plato's Republic. It argues that the failure to find a consistent reading of how the metaphor is used has contributed to a number of long-standing disagreements, especially concerning the more famous metaphor with which it is intertwined, the Cave allegory. A full reading of the metaphor, as it occurs throughout book 7, is offered, with particularly close attention to what is one of the most difficult and stubbornly divisive passages in book 7, 532b6–d1.

(A Portuguese translation, kindly prepared by Thiago Corrêa, can be found here: A metáfora da rotação da alma no Livro 7 da República de Platão.)

‘What is Eikasia?’ Oxford Studies in Ancient Philosophy 58 (2020) 19–57 PDF

This paper defends a reading of eikasia—the lowest kind of cognition in the Divided Line—as a kind of empirical cognition that Plato appeals to when explaining, among other things, the origin of ethical error. The paper has two central claims. First, eikasia with respect to, for example, goodness or justice is not different in kind to eikasia with respect to purely sensory images like shadows and reflections: the only difference is that in the first case the sensory images include representations of value properties. Second, eikasia is not the bare awareness of images or simply a label for an error (mistaking image for original) but a kind of empirical, image-confined cognition, and one that has an important part to play in characterising the cognitive abilities of the non-rational parts of the soul.

‘The Translation of Republic 606a3–b5 and Plato's Partite Psychology’ Classical Philology 114 (2019) 136–141 PDF

In this paper I discuss the translation of a line in Plato's description of the ‘greatest accusation’ against imitative poetry, Republic 606a3–b5. This line is pivotal in Plato's account of how poetry corrupts its audience and is one of the Republic's most complex and interesting applications of his partite psychology, but it is misconstrued in most recent translations, including the most widely used. I argue that an examination of the text and reflections on Platonic psychology settle the translation decisively.

‘Sex, Wealth, and Courage: Kinds of Goods and the Power of Appearance in Plato's ProtagorasAncient Philosophy 38 (2018) 241–263 PDF

I offer a reading of the two conceptions of the good found in Plato’s Protagoras: the popular conception—‘the many’s’ conception—and Socrates’ conception. I pay particular attention to the three kinds of goods Socrates introduces: (a) bodily pleasures like food, drink, and sex; (b) instrumental goods like wealth, health, or power; and (c) virtuous actions like courageously going to war. My reading revises existing views about these goods in two ways. First, I argue that the many are only ‘hedonists’ in a very attenuated sense. They do not value goods of kind (b) simply as means to pleasures of kind (a); rather, they have fundamentally different attitudes to (a) and (b). Second, the hedonism that Socrates’ defends includes a distinction between kinds of pleasures: (a) bodily pleasures and (c) the pleasures of virtuous actions. This distinction between kinds of pleasures—some that do and some that do not exert the ‘power of appearance’—allows Socrates to address one of the central beliefs in the popular conception of akrasia, namely that it involves a special kind of unruly desire: non-rational appetites for pleasures like food, drink, or sex. Socrates replaces the motivational push of non-rational appetites with the epistemic pull of the appearance of immediate pleasures like food, drink, and sex.

‘Appearance, Perception, & Non-Rational Belief: Republic 602c–603aOxford Studies in Ancient Philosophy 47 (2014) 81–118 PDF

In book 10 of the Republic we find a new argument for the division of the soul. The argument’s structure is similar to the arguments in book 4 but, unlike those arguments, it centres on a purely cognitive conflict: believing and disbelieving the same thing, at the same time. The argument presents two interpretive difficulties. First, it assumes that a conflict between a belief and an appearance—e.g. disbelieving that a stick partially immersed in water is, as it appears, bent—entails a conflict between beliefs. Prima facie, there is only one belief, the belief that contradicts the appearance. Second, it is unclear what parts of the soul Plato intends to divide between: some argue that it is, as in book 4, a partition between a rational and a non-rational part; others argue that it is a new partition between a higher and a lower subdivision of the rational part.

This paper offers solutions to both difficulties through an analysis of what Plato means by φαινόμενα, ‘appearances’, and δόξαι, ‘beliefs’. It is argued, first, that the relevant appearances are entirely sensory but nonetheless sufficiently belief-like to (a) warrant being called δόξαι and (b) oppose, by themselves, our beliefs; there is no need for a third mental state, a belief that assents to the appearance. A second claim concerns a central line in the argument, 602e4–6, that has served as the primary evidence that the partition is within the rational part of the soul. Those who wish to avoid this conclusion generally resort to alternative, and less natural, translations of 602e4–6. It is argued that this is unnecessary: once we have correctly understood sensory appearances, we see that the standard translation of 602e4–6 in fact entails a division between a rational and a non-rational part of the soul.


‘The Ethical Life of Embodied Souls: Rational & Non-Rational in Plato’s Republic’ [book chapter]

‘From Mathematics to Dialectic in Plato’s Republic’ [book chapter]

In Prep/under review

Plato's Images of the Sun, Line, & Cave [book]