"[E]xperts go wrong when they try to fit simple models to complex situations. ("It's the Great Depression all over again!") They go wrong when they leap to judgment or are too slow to change their minds in the face."
"If you want good, stable long-term performance, you're better off with the fox. If you're up for a real roller-coaster ride, which might make you fabulously wealthy or leave you broke, go hedgehog."
"We need to believe we live in a predictable, controllable world, so we turn to authoritative-sounding people who promise to satisfy that need. That's why part of the responsibility for experts' poor record falls on us. We seek out experts who promise impossible levels of accuracy, then we do a poor job keeping score."