One entry on the list:
The Hobbit, by JRR TolkienRead about the other entries on the list.
Bilbo has to defeat Gollum in a riddle competition if he is to escape from the tunnel under the Misty Mountains. Here is his first one. "Thirty white horses on a red hill, / First they champ, / Then they stamp, / Then they stand still." Answer: teeth. Gollum's reply? "Voiceless it cries, / Wingless flutters, / Toothless bites, / Mouthless mutters." Easy.
The Hobbit is a book Niall Ferguson hopes parents will read to their kids.