If you have trouble imagining a 20% loss in the stock market, you shouldn't be in stocks.
John C. BogleSo the misplaced assumption is that we have this whole new institutional element where these [financial] institutions are looking after their own financial interests before the financial interests of the principals, princi-pals whose interests they are really bound to observe first.
John C. BogleThe business has some problems, substantial problems. You go fix it, you young people. That's what you're there for. Don't believe what the old generation tells you. We don't know a damn thing, including Bogle.
John C. BogleWhile the apostles of the new so-called "behavioral" theory present ample evidence of how often human beings make irrational financial decisions, it remains to be seen whether these decisions lead to predictable errors that create systematic mispricings upon which rational investors can readily and economically capitalize.
John C. Bogle