Willie Costello



Postdoctoral Fellow


St. George,


Willie Costello specializes in ancient Greek philosophy, with particular interests in ancient Greek metaphysics and Plato. His main body of research concerns how ancient thinkers from the Presocratics to Aristotle sought to explain (what we’d now think of as) the structure and composition of ordinary objects. Willie is especially interested in clarifying how Plato fits into this tradition, and showing how Plato’s conception of Forms was developed against this background. Willie is currently developing this work into a monograph, titled The causal origins of Plato’s Forms.

In addition to his work on ancient metaphysics, Willie is more generally interested in elucidating Plato’s methods as a writer, and demonstrating the various specific ways in which his dialogues advance philosophical positions beyond what is explicitly argued by their speakers. This interest has led Willie to write papers on diverse aspects of Plato’s thought, including his ethics, epistemology, and aesthetics. Outside of ancient Greek philosophy, Willie has teaching and research interests in the philosophy of literature and the philosophy of emerging technologies.

Willie received his PhD in Philosophy from the University of Toronto in 2015. For more information, please visit his personal website.

Research Interests:

Ancient Philosophy


Jackman Humanities Building (room 424), 170 St. George Street, Toronto, ON M5R 2M8