Traditional sales and marketing involves increasing market shares, which means selling as much of your product as you can to as many customers as possible. One-to-one marketing involves driving for a share of customer, which means ensuring that each individual customer who buys your product buys more product, buys only your brand, and is happy using your product instead of another to solve his problem. The true, current value of any one customer is a function of the customer's future purchases, across all the product lines, brands, and services offered by you.

Anticipated, personal, and relevant advertising always does better than unsolicited junk.

When you think about Uber and Airbnb and the other companies that are turning things upside down, Uber isn't big 'cause they ran a lot of ads. They're big because someone took out their iPhone and said to their friend, watch this, and pressed a button and a car pulled up.

Turn strangers into friends. Turn friends into donors. And then do the most important job: Turn your donors into fundraisers.

And it turns out that tribes, not money, not factories, that can change our world, that can change politics, that can align large numbers of people. Not because you force them to do something against their will. But because they wanted to connect.

The first step toward becoming extraordinary is, of course, to stop being ordinary.

More time [to decide] without more information just creates anxiety, not insight.