I would add (possibly repeat) to Thabiti Anyabwile’s great list of Chesterton quotes:
“A paradox is a truth standing on its head to get our attention.”
“Tolerance is the virtue of people who don’t believe anything.”
“A man can no more possess a private religion than he can possess a private sun and moon.” (see here)
“Everything has a story tied to its tail.”
In the fairy tale an incomprehensible happiness rests upon an incomprehensible condition . . . It is a dreadful thing to say that Mr. W.B. Yeats does not understand fairyland. But I do say it. He is an ironical Irishman, full of intellectual reactions. He is not stupid enough to understand fairyland. Fairies prefer people of the yokel type like myself; people who gape and grin and do as they are told. G.K. Chesterton.
‘Do you believe that truth is stranger than fiction?’ ‘Truth must of necessity be stranger than fiction,’ said Basil placidly. ‘For fiction is the creation of the human mind, and therefore congenial to it.’ G.K. Chesterton
The flavor of some of these quotes reminds me of something I recently heard Carl Trueman say. He said the positive side of having various denominations is that it shows that somebody still believes something.