About Us


All the staff at CEPHAS are voluntary. They are motivated by the shared desire to create a space for a renewal of philosophy and theology – as a vital and living tradition – in the U.K.

Dr George Corbett – Director

BA (Hons), M-Phil, MA, Ph.D (Cantab)

George is Senior Lecturer at the School of Divinity, University of St Andrews, and one of three principal staff of ITIA (the Institute for Theology, Imagination and the Arts). He is the author of Dante and Epicurus: A Dualistic Vision of Secular and Spiritual Fulfilment (Oxford: Legenda, 2013), and the co-editor of Vertical Readings in Dante’s Comedy, 3 vols (Cambridge: Open Book Publishers, 2015-17), an international collaboration by thirty-four scholars on a reappraisal of the whole poem. He researches theology and the arts (across all periods), medieval theology, and systematic and historical theology (with a focus on Aquinas and his enduring influence in Catholic, Orthodox and Reformed traditions).


Sister Valery Walker, O.P.

Workshop Leader

Sr Valery is a Dominican Sister of the Stone Congregation. In the early 1970s, she was introduced by Fr Romuald Horn O.P. to a particular method of studying the Summa Theologica of St Thomas Aquinas.

Since then, she has run numerous S Thomas study days and weekends.



Dr Daniel de Haan, PhD

Workshop Leader

Dr. Daniel De Haan works on the philosophy of cognitive neuroscience, philosophical and theological anthropology, and medieval philosophy.

He completed his Ph.D. in 2014 through a doctoral co-tutela between the Center for Thomistic Studies, University of St. Thomas, Houston, TX and the De Wulf-Mansion Centre for Ancient, Medieval and Renaissance Philosophy, Institute of Philosophy, Katholieke Universiteit Leuven.

In January 2015 he joined the Faculty of Divinity, Cambridge University as a postdoctoral fellow working on the neuroscience strand of the Templeton World Charity Foundation Fellowships in Theology, Philosophy of Religion, and the Sciences Project, directed by Sarah Coakley.

Mr Stephen Barrie

Workshop Leader
BA (Hons), M.A. 

Stephen is the ‘Education Officer’ at the Anscombe Bioethics Centre (www.bioethics.org.uk), a Catholic research institute based in Oxford. He is also a PhD student in the Department of Philosophy, King’s College London. His research focuses on ‘double effect reasoning’, action and agency.


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