The first few chapters of this book are about the difference between animals and humans. (Setup for the difference between Christ and humans, but interesting on its own.) I had randomly brought up this topic as a bit of a game for my sisters before I even purchased this book, guessing what the accepted difference was between an animal and a person. It was Christmas and I thought it would be interesting to puzzle out. I won't say what "scientists have decided" and you can play for yourself, it's sort of fun depending on your social context to see what people come up with.

Chesterton is a more .... Baroque writer than Lewis is; like most people probably I came to him from Lewis who often writes about Chesterton's influence on his writing and his conversion. He also is writing for a contemporary audience so some of the references to popular arguments or his gripes with Christian Scientists were oblique to me. But he really knows how to end a chapter with a sentence to scare you.