On the other hand, check out this photo of his bookshelf that appeared on Wired. Who knows what books they have circled, but you can see Tom Woods' book Meltdown on the top shelf, second to last standing book.
This is damn fascinating. Meltdown is a hardcore explanation of what really caused the 2008 financial crisis. That Gates has this on what appears to be an exclusive bookshelf (Gates has an Einstein and Steve Jobs book on the same shelf!) tells you he knows what caused the crisis. Woods did a great job in this book.