Willie Pietersen was born in East London, South Africa and attended Rhodes University in Grahamstown, South Africa, where he earned a BA in law and economics and an LLB in law and was chairman of the Students Representative Council. He was awarded a Rhodes Scholarship to Oxford University in England where he received an MA in jurisprudence. After practicing law, he embarked on an international business career. By 1974, at age 36, Pietersen had become one of the youngest Managing Directors in the history of Unilever. Over a period of twenty years he served as the CEO of multibillion-dollar businesses such as Lever Foods, Seagram USA, Tropicana and Sterling Winthrop's Consumer Health Group. Pietersen has served as a director on several boards including the Institute for the Future (IFTF), a think tank based in Silicon [...] 1998, Willie was named Professor of the Practice of Management at the Columbia University Graduate School of Business. He specializes in strategy and the leadership of change, and his methods and ideas, especially Strategic Learning, are widely applied within Columbia's executive education programs, and also in numerous [...] is the author of two previous books: Reinventing Strategy, published in 2002, introduced the underlying principles and application tools for Strategic Learning. Strategic Learning, March 2010, builds on these ideas and offers more extensive practical guidelines.