Jack is an affectionate biography of CS Lewis by George Sayer, once a student, then a friend, of Lewis. This is an engaging, and warm look at Lewis and his writing. Sayer lays out Lewis life, and books, but what ultimately comes across is the joy and faith that characterized so much of both the public and private man. Reading this I felt that I knew something of the man, and not just the dry facts of his life but rather a bit like we had a long chat over tea on a rainy day. Strongly recommended. There are other, more objective and analytical books but this book is a the book of a friend and admirer. That is what gives it its' quality.