Lahey's book on John Wyclif's work published

October 30, 2026

Stephen Lahey and a book cover with blue and yellow design, set against a cityscape.
Stephen Lahey and the cover of his book

Wyclif's Mystic Body: A Study of his Summa de Ente and De Ecclesia by Stephen Lahey has been published by Brepols.

John Wyclif's concept of the Church as a corpus mysticum, as described in his De Ecclesia, is based in the metaphysical realism described in the treatises of Summa de Ente I. In this study, Lahey establishes that Wyclif's ontology and philosophy of language support the distinct reality of aggregate beings, apart from their constituent parts. The Church is just such a being, Wyclif believes, a continuation of the Incarnation in history.

Lahey is Cotner Professor in the Department of Classics and Religious Studies, part of the College of Arts and Sciences. He specializes in medieval theology and philosophy and studies the Oxford theologian John Wyclif and the Hussite movement in 15th century Bohemia.

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