This book serves two purposes. It is intended to be a daily devotional (like Oswald Chambers "My Utmost For His Highest"), focusing on G. K. Chesterton's wit and wisdom. The quotes were selected by Chesterton himself, so they represent what he thought was important, as opposed to reading another person's second-guessings.
One good point is that it has moveable feasts in an appendix, like Lewis's "The Business of Heaven." A down point is that the book lacks an entry for Leap Day. This is a common mistake made by all devotionals I own, except for Chambers's. If you are smart enough to include the Roman Catholic feast days (which you would expect from Chesterton), then why can't you remember Leap Day? It is beyond me!
The second purpose of the book is an unintentional one. This book serves as a de-facto quote book. I love quote books, since they serve as random sampler for a person's thought. C. S. Lewis said, "The only use of selections is to deter those readers who will never appreciate the original, and thus save them from wasting their time on it, and to send all the others on the original as quickly as possible." (The Quotable Lewis, #447)
This book accomplishes both: it is a wonderful daily devotional, and it whets the appetite for more.