For Chesterton, two essentials lay at the heart of conversion, and without these, a man misses the point of it all. He describes these in his own words: "One is that he believes it to be solid objective truth, which is true whether he likes it or not; and the other is that he seeks liberation from his sins." That is why Chesterton became a Catholic, and what he describes in his unique and colorful way in this book.