I. Form and Content Long-time friend and literary executor of the Lewis estate, Owen Barfield has suggested that there were, in fact, three "C. S. Lewises." That is to say, there were three different vocations that Lewis fulfilled--and fulfilled successfully--in his lifetime. There was, first, Lewis the distinguished Oxford don and literary critic; secondly, Lewis, the highly acclaimed author of science fiction and children's literature; and thirdly, Lewis, the popular writer and broadcaster of Christian apologetics. The amazing thing, Barfie ....