Season four is coming, and I bought the book to shorten the waiting time, but The Wit and Wisdom of Tyrion Lannister is hardly worth its price. (Not for one who has read all the books twice, anyway). It's a small and thin book with one short word of wisdom per page. However, admittedly, those words make me smile.
Example one: “When you tear out a man's tongue, you are not proving him a liar, you are telling the world you fear what he might say.”
Example two: “A sword through the bowels. A sure cure for constipation.”