Teun Tieleman studied classics and philosophy at Utrecht University, where he earned his PhD with highest distinction (1992). After spells in Nijmegen and in secondary education he returned to the Utrecht Department of Philosophy in 2001. He has held visiting positions at Cambridge University (1993), Novosibirsk State University, Siberia (2008, 2011, 2012, 2013), UCLA (2009), the Institute for Religion and Critical Inquiry, ACU, Melbourne (2018) as well as Humboldt-Universität zu Berlin (2023).

His research focuses on Galen of Pergamum and his influence, Stoicism (Early Stoa, Posidonius, Seneca), theories of emotion, the relation between ancient medicine and religion as well as ancient philosophy and early Christianity. With Keimpe Algra he is working on a new edition of the fragments of the Early Stoa, starting with the school’s founder, Zeno of Citium, using a database created under the supervision of prof. dr. Jaap. Mansfeld.

Teun Tieleman directed the research project ‘Human Nature: Medical and Philosophical Perspectives in the Work of Galen of Pergamum (2015-2021)’ funded by the Netherlands Organisation for Scientific Research (NWO).

He is  a member of the governing board of the Gravitation-programme ‘Anchoring Innovation’ (2018-2028).

Teun Tieleman is Chair of the board of OIKOS, the national research school in classical studies in the Netherlands.


For an up-to-date list of publications see the Galen project website (link given below).



Ancient Philosophy and Medicine