Jurgen Moltmann is professor emeritus of systematic theology at the University of Tubingen (Germany). He is the author of over twenty books with Fortress Press, including The Crucified God (1973), Theology of Hope (1993), and The Spirit of Life (2001). Miroslav Volf is Henry B. Wright Professor of Theology at Yale Divinity School. Among his notable books is After Our Likeness: The Church as the Image of the Trinity (Eerdmans, 1998).