What must underlie successful epidemics, in the end, is a bedrock belief that change is possible, that people can radically transform their behavior or beliefs in the face of the right kind of impetus.

I don't go to an office, so I write at home. I like to write in the morning, if possible; that's when my mind is freshest. I might write for a couple of hours, and then I head out to have lunch and read the paper. Then I write for a little bit longer if I can, then probably go to the library or make some phone calls. Every day is a little bit different. I'm not highly routinized, so I spend a lot of time wandering around New York City with my laptop in my bag, wondering where I'm going to end up next. It's a fairly idyllic life for someone who likes writing.

The conventional wisdom is often wrong. Crime didn't keep soaring in the 1990s, money alone doesn't win elections, and - surprise - drinking eight glasses of water a day has never actually been shown to do a thing for your health. Conventional wisdom is often shoddily formed and devilishly difficult to see through, but it can be done.

Do you see the consequences of the way we have chosen to think about success? Because we so profoundly personalize success, we miss opportunities to lift others onto the top rung...We are too much in awe of those who succeed and far too dismissive of those who fail. And most of all, we become much too passive. We overlook just how large a role we all play—and by “we” I mean society—in determining who makes it and who doesn’t.

When we become expert in something, our tastes grow more esoteric and complex.

I've always been baffled by how much we over-rate the statistically insignificant differences that separate competitors at the top end of the distribution.

I think actually the marketing community is approaching a crisis: There are just too many messages competing for too little attention. That is the fundamental problem.