Nikolaos Asproulis is deputy director of the Volos Academy for Theological Studies and lecturer in the Studies in Eastern Orthodox Theology Postgraduate Program at Hellenic Open University. John Chryssavgis is archdeacon of the Ecumenical Patriarchate and theological advisor to Ecumenical Patriarch Bartholomew on environmental issues.

Three decades after his untimely death, the theological and ecumenical legacy of Nikos Nissiotis remains unprecedented and undiscovered. At a time when global society and Christianity face unforeseen challenges in society and politics, science and technology, as well as the rise of religious nationalism and radicalism, Nissiotis’ theological voice, founded on the spirit of dialogue, offers a vibrant interpretation of Church teaching as well as a timely reflection on ecumenical relations.Nikos Nissiotis served for many years as Director of the Ecumenical Institute in Bossey and was the Orthodox voice in the World Council of Churches in Geneva. In ecumenical conferences throughout the world, he was capable of communicating the Orthodox response to questions of common interest in a clear, coherent, and comprehensible manner. We miss this extraordinary Greek theologian in the global dialogue of Christianity, and we will never forget his theology of “paschal joy.”

• Foreword by John Zizioulas, Metropolitan of PergamonAcknowledgmentsIntroduction by John ChryssavgisPart 1: Prelude to Theology1. Theology as Science and Doxology2. Reflections on the Renewal of Systematic TheologyPart 2: Scripture and Tradition3. The Unity of Scripture and Tradition4. Corporate Worship and Individual PrayerPart 3: Trinity and Creation 5. The Doctrine of the Holy Trinity in Church Life and Theology6. Pneumatological Christology as a Presupposition of Ecclesiology7. Secular and Christian Images of the Human Person8. Pneumatological Christology: Nature, Ecology, and Integral HumanityPart 4: Church and Society 9. Our History: Limitation or Creative Power?10. The Unity of GracePart 5: Ecumenism and Mission 11. The Ecclesiological Foundation of Mission12. The Witness and the Service of Orthodoxy to the Undivided ChurchPart 6: Theology and Education13. Toward an Ecumenical Theological Education14. Toward an Orthodox Theological EducationBibliographyAbout the Editors