Jean-René Bouchet

This article by the Dominican Jean-René Bouchet offers a theological and biographical study of Vladimir Lossky considered as a "man of the Church" rather than as a mere academic theologian. Drawing on Lossky's major works, notably the *Mystical Theology of the Eastern Church* and *In the Image and Likeness of God*, the author examines the way in which Lossky approached relations between the Orthodox Church and the Roman Catholic Church. Against the image of a sectarian thinker, Bouchet shows that Lossky, deeply rooted in the Orthodox tradition, sought a frank and rigorous dialogue, grounded in a clear-eyed recognition of dogmatic divergences, particularly around the *filioque*. The contribution of the article lies in its highlighting of the pneumatological and ecclesiological dimension of Lossky's thought, whose relevance extends beyond the ecumenical context to question the spiritual vitality of the Orthodox Church itself.