“Adeney is a kind of human optimization machine, the quintessence of that urge, which is stronger in some of us than in others, to elevate principle over appetite, and to seek out better, cheaper ways of doing things. He presents thrift as liberation rather than as deprivation.” Peter Adeney (who goes by the nickname Mr. Money Mustache) made enough money in his twenties to retire at 30. Actually, it wasn’t about making money, it was about saving it. Nick Paumgarten with the fascinating story of Mr. Money Mustache’s retirement (sort of) plan.

+ Which city in the world has the most billionaires? NYC? SF? Nope, Beijing.

+ The Morning News asked two dozen people from various backgrounds to tell you the best way to spend a single dollar.