The title "Introduction to Christianity" is a misnomer. This is not an introduction for those unfamiliar with Christianity. It is a study of the biblical, philosophical and rational beliefs which make up the Christian faith.
This book begins with a study of faith in the world today, followed by the form of faith offered by the Church. He presents the tenets of the Apostles Creed, line by line. In so doing he draws on the Bible, the writings of theologians and literary figures throughout the ages as well as his own reflections. He explains the meanings of the portions of the Creed. The reader is introduced to differing interpretations of some of the clauses. An example of this is the theology of the Incarnation, meaning that God becoming man is the most important fact, versus the theology of the Cross, which emphasizes the actions of Jesus. His Holiness examines difficulties, real and apparent, in the texts and concepts about them. For some he is able to provide guidance to what he regards as the correct conclusion, for others he just leaves the difficulty for our discernment.
To my way of thinking, this is a deep book. For those with more theological training than me, it may be an introduction. Although it is deep, it is also rewarding. It has opened my eyes to new interpretations of the Creed. It has led me to think deeply about God and His relation to man and our relations to each other. I am sure that I will think often about what I have learned from this book and will refer to it in the future. For anyone with a reasonable background in theology and a desire to understand our call from God, this book is outstanding. It is, simply, one of the best books that I have ever read.