Historian of Medieval and Late Antique philosophy and theology. Research interest: methodology in medieval philosophy and theology, theory of language and proof, and its applicability to conceptual analysis. An additional interest in early Christianity and the apocrypha, and political theology. Studied geophysics, philosophy, Hungarian philology and classics at ELTE. Visiting graduate student at St Edmund Hall, Oxford, 1986-7; Osteuropastipendiat in Fribourg (Switzerland) in 1990-1, and British Council Research Fellow at Pembroke College, Oxford (1993). Regular positions at the Janus Pannonius University at Pécs, Hungary 1983-1991, then at ELTE, 1991-2007, and at CEU from August 2007. Former head of the Medieval Studies Department (2007-10). Taught also at Liverpool, and as a Fulbright Teaching Scholar at Rutgers University. Guest lecturer at ELTE.