This chapter explores the topic of self-knowledge in ancient thought, asking in particular what the ancient concept (or concepts) of knowing oneself amounts to. The chapter begins by contrasting the issues which occupy ancient and contemporary discussions of self-knowledge, and the obvious points of continuity and discontinuity between the two. The author isolates two forms of self-knowledge: cognitive self-knowledge or knowledge of one’s own mental states, and dispositional self-knowledge or knowledge of one’s moral or intellectual dispositions, and traces the treatment (...) of these forms of self-knowledge in the works of Plato, Aristotle, Hellenistic philosophers, and Plotinus. In the course of discussing the texts of each thinker or school, and the relevant scholarship, this chapter also canvasses the ways in which the chapters in the rest of this volume seek to engage with some of the problems or issues that have emerged. (shrink)

This paper argues for the presence in Plato’s work of a conception of thinking central to which is what I call the Transparency View. According to this view, in order for a subject to think of a given object, the subject must represent that object just as it is, without inaccuracy or distortion. I examine the ways in which this conception influences Plato’s epistemology and metaphysics and explore some ramifications for contemporary views about mental content.

In some of Plato’s early dialogues we find a concern with correctly ascertaining the contents of a particular kind of one’s own psychological states, cognitive states. Indeed, one of the achievements of the elenctic method is to facilitate cognitive self-knowledge. In the Alcibiades, moreover, Plato interprets the Delphic injunction, ‘know yourself’, as crucially requiring cognitive self-knowledge, and ending in knowing oneself as subject to particular epistemic norms. Epistemic authority for self-knowledge is, for Plato, conferred on the basis of correct application (...) of norms to cognitive self-ascriptions, and not confined to the first-personal perspective. This implies first-personal plural epistemic authority for self-knowledge. (shrink)