Ideas and products and messages and behaviors spread just like viruses do.

Truly successful decision-making relies on a balance between deliberate and instinctive thinking.

Living a long life, the conventional wisdom at the time said, depended to a great extent on who we were-that is, our genes. It depended on the decisions we made-on what we chose to eat, and how much we chose to exercise, and how effectively we were treated by the medical system. No one was used to thinking about health in terms of community.

People are experience-rich and theory-poor. I help people organize / make sense of their experiences.

We are approaching levels - if we're not beyond levels - of threshold for the number of messages that consumers can take in in a given day. There is a kind of hunger for some kind of new approach to getting the word out about something.

Cultural legacies are powerful forces. They have deep roots and long lives. They persist, generation after generation, virtually intact, even as the economic and social and demographic conditions that spawned them have vanished, and they play such a role in directing attitudes and behavior that we cannot make sense of our world without them.

What track needs to figure out: how to engage us between the races. Instead, the entire off-the-track conversation is about doping. This is how you kill a sport.