There’s more to life than toothpaste and diapers. Jim Stengel, the former global marketing officer of Procter & Gamble, is launching Jim Stengel LLC, a company that will specialize in “purpose-based marketing,” which means making and marketing products in a way that improves people’s lives. During his time with P&G, Mr. Stengel helped develop programs that improved the lives of the consumer in ways other than buying consumere products. For example, Safeguard launched a program...