George Soros cites Isaiah Berlin as an important intellectual influence, so it makes sense to see Soros through one of the Riga-born philosopher’s best-known lenses — the division of the world into foxes and hedgehogs. In his public life, Soros is a broad-minded fox: As a hedge fund manager, his success rested on his ability to make many different bets every day. In his philanthropy, Soros is foxy too, supporting, under the broad umbrella of “open society,” dozens of causes in dozens of countries.