At Aetna, a C.E.O.’s Management by Mantra [NYTimes.com]
On a recent wintry afternoon, Mark T. Bertolini, the 58-year-old chief executive of Aetna, the health insurer, was sitting in his Hartford office wearing a dark suit and a crisp, white, French-cuffed shirt. But instead of a necktie, he wore a...