Since CS Lewis first published his Mere Christianity in 1952, it has remained a classic of Christian apologetics in its attempt to set out the fundamental truths of religion without denominational bias. It is much the same intention which lies behind the enormous success of the contemporary Alpha courses which are broadly evangelical in sympathy but again attempt to separate Christology from ecclesiology. For the Catholic, this method has to be problematic as we live happily with the sentiment expressed in the old child’s grace after a meal: “For what we have received may we be truly grateful”! Though faith and reason must always challenge each other, we believe that within Catholicism there is a continuity of witness and interpretation which reaches back to apostolic times, and we are content to work with the credal formulations handed down to us and make them our own (no matter the reality of the struggle at times).