Foreword for the 10th Anniversary Edition

Jack Bogle deserves the profound gratitude of the American public. First, he devotes enormous amounts of time and energy to showing investors how to navigate the treacherous marketplace for financial services. Second, he created Vanguard, a rare financial institution that places the interests of the investor front and center. Without Jack Bogle's efforts, Americans would face a financial landscape nearly barren of attractive alternatives.

Bogle offers disarmingly simple advice: employ low-cost index funds in a low-turnover, disciplined portfolio strategy. Unfortunately, few follow his sensible advice. The vast majority of investors play an active management game in which they lose two ways. First, they lose by choosing actively managed mutual funds that almost always fail to deliver on the promise of market-beating results. The shortfall comes from wildly excessive, ultimately counterproductive trading (with the attendant market impact and commissions) and from unreasonable management fees (that far exceed the managers value added, if any). And, as Bogle points out, nearly all mutual fund managers behave as if taxes do not matter, thereby imposing an unnecessary and expensive tax burden (that often blindsides the investing public when they deal with the IRS on April 15).

Second, investors lose by trading mutual funds with eyes fixed unwaveringly on the rearview mirror. By dumping yesterday's faded idol and chasing today's hot prospect, mutual ...

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