> They became billionaires in large part because of their work ethic. Tell me you're an American without telling me you're an American. :) Thomas Piketty wro

> They became billionaires in large part because of their work ethic. Tell me you're an American without telling me you're an American. :) Thomas Piketty wrote a book on this topic (which I highly recommend) called "Capital in the Twenty-First Century".