“Friendship, then, like the other natural loves, is unable to save itself. In reality, because it is spiritual and therefore faces a subtler enemy, it must, even more wholeheartedly than they, invoke the divine protection if it hopes to remain sweet. For consider how narrow its true path is. Is must not become what the people call a "mutual admiration society"; yet if it is not full of mutual admiration, of Appreciative love, it is not Friendship at all.”

British author, literary scholar, and Anglican lay theologian

C. S. Lewis was a British author, literary scholar, and Anglican lay theologian. He held posts in English literature at Magdalen College, Oxford, and later at Magdalene College, Cambridge. He is best known for The Chronicles of Narnia. Lewis also wrote The Screwtape Letters and the Space Trilogy, along with Christian apologetic works such as Mere Christianity, Miracles, and The Problem of Pain. His writing ranges from imaginative fiction to religious argument, and much of it reflects his interest in Christian belief and moral questions.