Introduction to Christianity

Joseph Ratzinger delivered these lectures at the University of Tübingen during the tumultuous summer of 1967, as student protests swept German universities and traditional Christianity faced unprecedented intellectual and cultural challenges. The future Pope Benedict XVI found himself speaking to audiences increasingly skeptical of religious claims, in a context where Christian faith seemed to many an anachronism in the modern world. These circumstances pressed him toward a fundamental question: what does it mean to believe, and how can the ancient Christian confession of faith speak meaningfully to contemporary humanity?

Ratzinger structures his exploration around the Apostles' Creed, but rather than offering conventional theological exposition, he probes the very nature of belief itself. He argues that faith and doubt are not opposites but intertwined realities, both necessary for authentic human existence. Moving through the creedal affirmations about God, Christ, and the Spirit, he demonstrates how Christian doctrine addresses the deepest questions of human meaning and destiny. His treatment of Jesus Christ occupies the book's center, where he argues that the historical figure of Jesus reveals both the true nature of God and the authentic possibility of human existence. Throughout, Ratzinger engages seriously with modern philosophy and biblical criticism while maintaining that Christian faith offers irreplaceable insights into reality that reason alone cannot provide.

The work established Ratzinger's reputation as a theologian capable of bridging academic rigor with pastoral sensitivity, and it remains one of the most influential Catholic theological works of the late twentieth century. Its combination of intellectual honesty about the difficulties of faith with profound conviction about Christianity's truth continues to resonate with readers seeking a sophisticated yet accessible account of Christian belief. This book serves readers who want serious theological reflection that neither retreats from modern challenges nor capitulates to them, particularly those wrestling with faith in secular contexts. It is not suitable for those seeking simple apologetics or devotional reading, as Ratzinger demands sustained intellectual engagement with complex questions.