In his updated book Let My People Go Surfing (Penguin Random House, 2016), first published in 2006, Patagonia founder and owner Yvon Chouinard describes the unique pillars of success for his famous enterprise. In the following edited excerpt, Chouinard explains how a business philosophy focused on doing good ensures both profit and longevity for a company with more than $750 million in sales. We are a product-driven company. That means the product comes first and…