text:  This is Travel with Rick Steves. We've been talking with James Gardner, and his book is The Louvre, The Many Lives of the World's Most Famous Museum. James, I'd like to get just a couple of tips from you as an art critic and a historian who really knows the museum. The building is massive. It's got 36,000 works of art on display, and what I understand, 8 million visitors enter every year.