The first step in thinking about the future of possessions and wealth lies in appreciating the tremendously varied and changeable attitudes to wealth over the course of history. Frank Trentmann, author of “Empire of Things: How We Became a World of Consumers, from the Fifteenth Century to the Twenty-First,” discusses the history of the material self in an article posted on UNLIMITED, an online global network powered by UBS, YPO’s Global Strategic Partner — Wealth Management.