Grit, Guts and Gumption had a foreword written by the businessman and philanthropist who served two years in prison for what infraction?
Grit, Guts and Gumption:  The foreword of the book was written by Rajat Gupta, former managing director of McKinsey & Company and co-founder of Indian School of Business. Rajat Gupta: Rajat Kumar Gupta (] ; born 2 December 1948) is an American businessman and philanthropist who served a two-year term in U.S. federal prison for insider trading.
insider trading