BUSINESS

At Aetna, A C.E.O.’s Management By Mantra - NYTimes.com

Mark Bertolini, chairman, president and chief executive officer of Aetna Inc., speaks at the Peterson Institute for Internati
Mark Bertolini, chairman, president and chief executive officer of Aetna Inc., speaks at the Peterson Institute for International Economics in Washington, D.C., U.S., on Thursday, May 24, 2012. Provisions of the U.S. health care law that will require most Americans to obtain insurance and forbid insurers from refusing to cover them won't work, said Bertolini. Photographer: Andrew Harrer/Bloomberg via Getty Images

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 shiny metal amulet engraved with the Sanskrit characters “sohum.”

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