""This book focuses on Lewis as a teacher, how he opens doors by challenging 20th-century views... Two ideas run through and unify the book. The first is that in all his writing Lewis encourage 'radical key' to all Lewis's critical and imaginative writings. Hart's aim is to show that there is in Lewis a single, integrated, systematic theory of literature focused on the importance of imagination and language. ""The book raises many of the right questions about Lewis and explores them in a stimulating and informative way."" -Christianity and Literature