Joseph Ratzinger, now Pope Benedict XVI, writes eloquently and persuasively about how one can live as a serious Christian in today’s secular world. He talks in depth about the true meaning of faith, hope, and love--the love of God and the love of neighbor. He also discusses at length the crucial importance of a lived faith, for the believer himself as well as being a witness for our age, and striving to bring faith in line with the present age that has veered off into rampant secularism and materialism. He passionately encourages the reader to practice a deep, abiding Christian faith that seeks to be at the service of humanity.

As Joseph Ratzinger mentions in the preface, "the book presents in written form three sermons that the author preached in the Cathedral at Muenster to a congregation from the Catholic Student Chaplaincy, December 13-15, 1964."

In other words, these are essays derived from sermons preached to college students toward the end of Vatican II. They are remarkable, among other reasons, for their insights into the ongoing Christian struggle to understand and realize in action "what it means to be a Christian".