C.S. Lewis was a British writer and professor whose books are largely about Christian theology and practice. One of the most famous Christian writers, Lewis wrote dozens of books including non-fiction, fiction, and poetry. Notable works include The Chronicles of Narnia, The Screwtape Letters, and Mere Christianity.
Bob wants to know why we humans believe that, after we die, we would be sent to a place based on what we did when we lived. He wants proof that Heaven and Hell exist.