C. S. Lewis is popular but wrong; we are not little Christs.
C. S. Lewis (1898-1963) was one of the most popular Christian writers of the twentieth century, and our century as well. Though he would have disliked being called a theologian, that is exactly what he was, even as he had no formal theological training. In fact, this is exactly what makes his works on Christianity so popular. Mere Christianity, begun as a series of radio lectures during World War Two, is almost conversational in tone. It is still taught in adult Christian education groups (Urban). By the way, the fact that Lewis had no formal theological training does not imply that he lacked intellectual standing, having taught medieval history at both Oxford and Cambridge. He also wrote the fictional Chronicles of Narnia. Unless noted, all pages numbers refer to Mere Christianity.
Most critics of Lewis as theologian are Christian evangelicals, and others, who believe he was too loose with doctrine, such as saying that other religions might contain a portion of truth about God. My take is somewhat the opposite. He is too literal about what it means to follow Christ. For Lewis it means to become “little Christs,” which to me makes no sense at all. Nevertheless, there is a charm and simplicity to his religious writing which has no equal, though perhaps G. K. Chesterton comes close.