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Dr Stefan Sienkiewicz

Lecturer in Ancient Philosophy


I read Literae Humaniores as an undergraduate at Christ Church, Oxford, where I also took an MSt in ancient philosophy.  I subsequently moved to Oriel College, Oxford, where I completed my DPhil in philosophy and taught as a college lecturer.  I then spent five years as Career Development Fellow in Ancient Philosophy at Balliol College, Oxford, following which, in 2019, I took up my current position at Queen’s.


Ancient philosophy.


My research interests are in ancient philosophy, with a focus to date on Sextus Empiricus and Pyrrhonian scepticism – the topic of my first book.  I am currently working on two other main projects – one on anti-sceptical arguments in Hellenistic philosophy and another on the philosophy of Protagoras.


Five Modes of Scepticism (Oxford: Oxford University Press, 2019).