C.S. Lewis is still revelant and his books are for adults as well as children. Some people don't get it.

Lewis explored the life-changing power of stories by writing one of his own, "The Voyage of the Dawn Treader," one of the seven books in "The Chronicles of Narnia." One of the key themes of this book is the old maxim—"You are what you read." He begins "The Voyage of the Dawn Treader" with one of the most memorable lines in the series: "There once was a boy named Eustace Clarence Scrubb, and he almost deserved it."

I always thought the maxim was "You are what you eat." The other makes more sense.