Cardinal Walter Kasper is one of the most influential Catholic theologians of our time. His theology of mercy connects theological scholarship back to the Gospel of Jesus and has a lasting impact on the papacy of Pope Francis. On the occasion of Walter Kasper's 60th anniversary of priesthood, George Augustin presents the theologian in the full breadth of his thought. Through selected key texts from recent years, he showcases the dogmatic-theological teacher, the ecumenist, and the spiritual thinker. A detailed biography serves as an introduction to help place the subsequent texts within Kasper's life. It is a worthwhile book for understanding this great personality and an encouragement to engage with his writings. "In light of the 60th anniversary of my priesthood, I can gratefully look back on a rich life and must navigate through all the upheavals.".