For a critical element of American society, including many of its wealthiest and most powerful, there seems to be no limit today on what “enough” entails.

The excesses are most starkly visible in the continuing crisis in banking and investment, and even in the two enormous government-sponsored (but publicly owned) mortgage lenders, to say nothing of the billion-dollar-plus annual paychecks that top hedge-fund managers draw down and the excessive compensation paid to CEOs, regardless of performance.

Throughout his legendary career, John Bogle—founder of the Vanguard mutual fund group and creator of the first index mutual fund—has helped investors build wealth the right way and led a tireless campaign to restore common sense to the investment world. Along the way, he’s seen how destructive an obsession with financial success can be.

Now, with Enough, he puts this dilemma in perspective.