This book is above all reflection on a theologian's life. Jurgen Moltmann's theology has been an adventure of ideas, and has been shaped by his personal career and the political context through which he has lived. It begins with the question of theology. What is theology and who is a theologian, a true theologian? There are examinations of historical theology, Christian theology and natural theology. Then comes a hermeneutics of hope: the logic of promise, historical and trinitarian hermeneutics and theological epistemology. The third section introduces models of liberating theology: black theology, liberation theology, Minjung theology, feminist theology and the still unanswered questions. The last section is devoted to the Trinity. Jurgen Moltmann writes that he has never wanted to be a pupil of the great theological masters or to found a school of his own. His aim has always been to help others to discover theology for themselves. They will be able to do that in abundance here. Jurgen Moltmann is Professor Emeritus of Systematic Theology in the Protestant Faculty of the University of Tubingen. Translated from the German by Margaret Kohl