Peter Thiel. Able to found two companies meant to change the world, both of which have turned out well; able to fund lots of Big Ideas, some of which have been

Peter Thiel. Able to found two companies meant to change the world, both of which have turned out well; able to fund lots of Big Ideas, some of which have been similarly lucrative. I don't think there's anyone else who spends so much time thinking about big ideas (his investment strategy is partly based on odds of a Singularity versus Armageddon) and is still able to make something of value.