As the playwright George Bernard Shaw once put it: “The reasonable man adapts himself to the world: the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.

A study at the University of Utah found that if you ask someone why he is friendly with someone else, he’ll say it is because he and his friend share similar attitudes. But if you actually quiz the two of them on their attitudes, you’ll find out that what they actually share is similar activities. We’re friends with the people we do things with, as much as we are with the people we resemble. We don’t seek out friends, in other words. We associate with the people who occupy the same small, physical spaces that we do.

...legitimacy is based on three things. First of all, the people who are asked to obey authority have to feel like they have a voice — that if they speak up, they will be heard. Second, the law has to be predictable. There has to be a reasonable expectation that the rules tomorrow are going to be roughly the same as the rules today. And third, the authority has to be fair. It can't treat one group differently from another.

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Economists often talk about the 80/20 Principle, which is the idea that in any situation roughly 80 percent of the “work” will be done by 20 percent of the participants. In most societies, 20 percent of criminals commit 80 percent of crimes. Twenty percent of motorists cause 80 percent of all accidents. Twenty percent of beer drinkers drink 80 percent of all beer. When it comes to epidemics, though, this disproportionality becomes even more extreme: a tiny percentage of people do the majority of the work.

[Research] suggests that what we think of as free will is largely an illusion: much of the time, we are simply operating on automatic pilot, and the way we think and act – and how well we think and act on the spur of the moment – are a lot more susceptible to outside influences than we realize.

Those three things - autonomy, complexity and a connection between effort and reward - are, most people agree, the three qualities that work has to have if it is to be satisfying. It is not how much money we make that ultimately makes us happy between nine and five. It's whether our work fulfills us.

To assume the best about another is the trait that has created modern society. Those occasions when our trusting nature gets violated are tragic. But the alternative - to abandon trust as a defense against predation and deception - is worse.

It was not the privileged and the fortunate who took in the Jews in France. It was the marginal and damaged, which should remind us that there are real limits to what evil and misfortune can accomplish. If you take away the gift of reading, you create the gift of listening. If you bomb a city, you leave behind death and destruction. But you create a community of remote misses. If you take away a mother or a father, you cause suffering and despair. But one time in ten, out of that despair rises as indomitable force. You see the giant and the shepherd in the Valley of Elah and your eye is drawn to the man with sword and shield and the glittering armor. But so much of what is beautiful and valuable in the world comes from the shepherd, who has more strength and purpose than we ever imagine.

We need to look at the subtle, the hidden, and the unspoken.