You will be able to choose between different registration options.
Call for Papers is now open. We look forward to receiving your proposal.
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If you have some questions please contact us and we will be happy to help.
About the Conference
The First Council of Nicaea, convened in 325 AD by the Emperor Constantine I, inaugurated an enduring paradigm not only in ecclesial administration but also in church identity. The Council’s processes and conclusions remain broadly normative with regard to church polity and the limits of Christian diversity.
Given that Nicaea took place at a time of remarkable religious pluralism and diversity and was convened in response to the disputes over “what is the Church” within that context, that early ecclesial reality shares an important resonance with our current historical moment.
The purpose of the conference is to pose the questions: In what ways does Nicaea continue to shape how we configure the Church today, with what opportunities and at what cost?
About Ecclesiological Investigations
Ecclesiological Investigations brings together quality research and inspiring debates in ecclesiology worldwide from a network of international scholars, research centres and projects in the field.
Thessaloniki 2025
To register for the conference, you have two options: standard registration or reduced registration. Reduced registration is available for students, retirees, and individuals without institutional support or permanent positions.
Nestled along the azure shores of the Aegean Sea, this historic metropolis boasts a rich tapestry of culture, history, and spirituality. Wander through its ancient streets lined with Byzantine monuments, including the awe-inspiring Hagia Sophia and the stunning Rotunda. Marvel at the intricate mosaics of the Church of Saint Demetrius, a testament to the city’s Byzantine legacy. Delight in the flavors of traditional Greek cuisine at bustling tavernas and cafés. Immerse yourself in Thessaloniki’s dynamic atmosphere, where the past meets the present in an unforgettable fusion of faith and discovery.
Meet the Conference
Emilio Alvarez
Marco Demichelis
Associate Professor in History of Islamic World and Islamic Thought of the Alma Mater Studiorum University of Bologna.
Susan Durber
A minister of the United Reformed Church and the present World Council of Churches President for the Europe region.
Leo D. Lefebure
The inaugural holder of the Matteo Ricci, S.J., Chair and Professor of Theology at the Georgetown University.
Elizabeth Prodromou
Professor in the International Studies Program at Boston College and Senior Fellow at the Atlantic Council’s Eurasia Center.
Geraldine Smyth
A theologian and educator in Ecumenics, working in academic, civic and church settings and dialogue.
Meet the Conference
Professor of World Religions at the American College of Thessaloniki, President of the Center of Ecumenical, Missiological and Environmental Studies
Pastor of the Evangelical–Lutheran Church in Württemberg and consultant at the Institute for Ecumenical Studies and Research in Bensheim
Associate Director of Graymoor Ecumenical & Interreligious Institute, Editor of Ecumenical Trends, and Adjunct Faculty in Theology at Fordham University.
Professor in the International Studies Program at Boston College and a Non-Resident Senior Fellow at the Atlantic Council’s Eurasia Center.
Assistant Professor of Comparative Theology at Boston College. He serves as a vice-chair and secretary of Ecclesiological Investigations Research Network.