Whatever the oddities of his politics or personal views, this set of essays on the theme of 'startups, or how to build the future' is full of useful insights and provocations. I've read it twice through over the last couple of months and found myself referring to it a lot, while wondering about its validity as applied to startups motivated by social purpose, whether for-profit or in the not-for-profit sphere (e.g. his idea that every startup should be aiming to dominate - even monopolise - its market).