Watch the 2016 Stone Lectures

Dr. Wolfgang Thönissen and Dr. Timothy J. Wenger speak on "Martin Luther, the 95 Theses, and Church Unity after 500 Years"

The 2016 Stone Lectures, held at Princeton Seminary on October 3-6, addressed the theme: “Martin Luther, the 95 Theses and Church Unity after 500 Years.” Follow the links below for videos of each lecture.


  • Dr. Wolfgang Thönissen, a Roman Catholic scholar, and professor of ecumenical theology, Theological Faculty of Paderborn, and executive director, Johann-Adam-Möhler Institute for Ecumenism
  • Dr. Timothy J. Wengert, a Lutheran scholar, and Ministerium of Pennsylvania Emeritus Professor of Church History, The Lutheran Theological Seminary at Philadelphia

Lecture I: “Indulgences and the Development of a Medieval Practice” (Thönissen)

Lecture II: “Martin Luther’s Disputation Clarifying the Power of Indulgences (the 95 Theses) As an Ecumenical Document?” (Wengert)

Lecture III: “Martin Luther’s Letters to Pope Leo X (1518, 1520) As Experiments in Ecumenical Conversation” (Wengert)

Lecture IV: “Reflecting on From Conflict to Communion and the Healing of Memories” (Thönissen)

Lecture V: “Commemorating the 500th Anniversary of the Reformation Together” (Thönissen and Wengert)
A mini choral concert featuring the Princeton Seminary Singers under the direction of Martin Tel, director of music, preceded the lecture.

Educating faithful Christian leaders.

Associate Rector at Trinity Church, Princeton, New Jersey

Nancy Hagner, Class of 2013

“Preaching is one of the most important things we do as pastors. You get to challenge people’s minds and hearts, as the gospel challenges all of us.”