C. S. Lewis was one of the two internationally famous theologians which Ireland has produced in its long embrace of the Christian tradition. The other was John Scotus Erigena. I find Lewis an intriguing figure as I seek to come to terms with what it means to engage in evangelism in our contemporary Western culture. Even a cursory reading of Lewis reveals a network of proposals which deserve the closest attention. In fact, it is a great pity that those interested in the conversion or evangelization of the West have paid next to no attention to Lewis and what he has to say to us. I can think of at least two reasons why this is the case.