Thunderhead, by Neal Shusterman, page 115: "the illusion of purpose is critical to a well-adjusted population."
Oh???? On god?????

(In all seriousness, I do like this book, and am looking forward to reading the conclusion of the Arc of a Scythe trilogy - but man, does the Thunderhead AI need therapy! You could throw a bunch of its words back at it and it'd probably crack.)