The book presents the transition from traditionalism to modernism in connection to two of Küng's most important books on ecclesiology: Structures of the Church (1962) as representing Küng's traditional theology, and On Being a Christian (1974) as a reflection of his modern approach to Christianity.

Does God exist? The question implies another: Who is God? This book is meant to give an answer to both questions and to give reasons for this answer. Does God exist? Yes or no? Many are at a loss between belief and unbelief; they are undecided, skeptical. They are doubtful about their belief, but they are also doubtful about their doubting. There are still others who are proud of their doubting. Yet there remains a longing for certainty. Certainty? Whether Christians or Jews, believers in God or atheists, the discussion today runs right across old denominations and new ideologies—but the longing for certainty is unquenched. Does God exist? We are putting all our cards on the table here. The answer will be "Yes, God exists," As human beings in the twentieth century, we certainly can reasonably believe in God—even more so in the Christian God—and perhaps even more easily today than a few decades or centuries ago. For, after so many crises, it is surprising how much has been clarified and how many difficulties in regard to belief in God have melted into the Light that no darkness has overcome.

Why should one be a Christian? Is there something more to being a Christian than to being human? Just what does it mean to be a Christian, especially in today's modern world? Hans Küng, one of the greatest theologians of this century, ponders these questions and, from a lifetime of study, suggests the answers. He looks carefully at the evidence in the Bible, at the challenges of modern humanisms and of the world-religions, at the questions concerning death, at the local and the universal church, at the individual's own personal decisions, and at the freedom that Christianity brings, including the freedom to serve.On Being a Christian is a vital and important statement about what it means to be a Christian. Hans Küng has himself said of the book, which he regards as his magnum opus, that it intends to "clarify and challenge Christian faith and life at a time when the churches have unfortunately lost rather than gained in credibility. It seeks to bring to light for this present time the original Christian message and particularly the figure of Jesus of Nazareth." The book continues to offer a strong message to today's Christians. As Küng says in the closing of the book, "By following Jesus Christ, people in the world today can live, act, suffer and die in a truly human way; in happiness and unhappiness, life and death, sustained by God and helpful to fellow men and women."

When it first appeared, in 1971, this book caused its author to lose his license from the church to teach. Long unavailable, the book now appears with a new preface and a survey of the discussion of papal infallibility.

Acclaimed as one of the most influential contemporary Christian thinkers, Hans Kung is considered a "modern-day Luther" because of his struggle to reform the Roman Catholic Church, especially in seeking to overturn the doctrine of the infallibility of the pope and bishops. In this masterful profile, John J. Kiwiet sheds light on Kung's life, his significance as a shaper of modern theology, and his call to prioritize Scripture and the Jesus of history.

As the twentieth century draws to a close and the rush to globalization gathers momentum, political and economic considerations are crowding out vital ethical questions about the shape of our future. Now, Hans Küng, one of the world's preeminent Christian theologians, explores these issues in a visionary and cautionary look at the coming global society. How can the new world order of the twenty first century avoid the horrors of the twentieth? Will nations form a real community or continue to aggressively pursue their own interests? Will the Machiavellian approaches of the past prevail over idealism and a more humanitarian politics? What role can religion play in a world increasingly dominated by transnational corporations? Küng tackles these and many other questions with the insight and moral authority that comes from a lifetime's devotion to the search for justice and human dignity. Arguing against both an amoral realpolitik and an immoral resurgence of laissez faire economics, Küng defines a comprehensive ethic founded on the bedrock of mutual respect and humane treatment of all beings that would encompass the ecological, legal, technological, and social patterns that are reshaping civilization. If we are going to have a global economy, a global technology, a global media, Küng argues, we must also have a global ethic to which all nations, and peoples of the most varied backgrounds and beliefs, can commit themselves. "The world," he says, "is not going to be held together by the Internet." For anyone concerned about the world we are creating, A Global Ethic for Global Politics and Economics offers equal measures of informed analysis, compassionate foresight, and wise counsel.