nJohn C. Bogle is founder of the Vanguard Mutual Fund Group and President of its Bogle Financial Markets Research Center. He created Vanguard in 1974 and served as chairman and chief executive officer until 1996 and senior chairman until 2000. In 1999, Fortune magazine named Mr. Bogle as one of the four Investment Giants of the twentieth century; in 2004, Time named him one of the worlds 100 most powerful and influential people; and Institutional Investor presented him with its Lifetime Achievement Award. Bogle is also the author of Enough. and The Little Book of Common Sense Investing, both published by Wiley.n