The key to good decision making is not knowledge... It's whether our work fulfills us.

What is learned out of hard work and trial is inevitably more powerful than what is learned easily.

Success is a function of persistence and doggedness and the willingness to work hard for twenty-two minutes to make sense of something that most people would give up on after thirty seconds.

The first person who throws the rock is a lot more radical than a hundredth person.By the time the riot has attracted a hundred people, you don't have to be nearly as much of a daredevil or a hothead or committed or any of those things to want to engage in a riot.

So the first task of a police force is not to fight crime and enforce the law. It is to establish legitimacy with the law-abiding citizenry and then fight crime and enforce the law.

Whenever we have something that we are good at--something we care about--that experience and passion fundamentally change the nature of our first impressions.

Often a sign of expertise is noticing what doesn't happen.