The message of believing in oneself and persevering through difficulties is clear, but there is a slight feeling that perhaps Stengel didn't help himself by being so difficult. While the age range on this book is given as 4-8, I think that even tween and teen readers will find a lot to take away from this book. I'm very curious to read You Never Heard of Sandy Koufax?! and You Never Heard of Willie Mays?!, also by these authors.