Then: The Wealth of Nations

Now: Invisible Hands: The Mysterious Market Forces That Control Our Lives and How to Profit from Them

Then: Walden

Now: Camping with Myself: Two Years in American Tuscany

Then: The Theory of the Leisure Class

Now: Buying Out Loud: The Unbelievable Truth About What We Consume and What It Says About Us

Then: The Gospel of Matthew

Now: 40 Days and a Mule: How One Man Quit His Job and Became the Boss

Then: The Prince

Now: The Prince (Foreword by Oprah Winfrey)