Karl Rahner once wrote: "Our present situation is one of transition from a Church sustained by a homogeneously Christian society and almost identical with it, from a people's Church, to a Church made up of those who have struggled against the environment in order to reach a clear, explicit, and responsible personal decision of faith." Clearly, today's Christians face such a choice. This book aims to articulate a vision of the Christian life that will be viable in the secular age in which we live.