Those three things — autonomy, complexity, and a connection between effort and reward — are, most people agree, the three qualities that work has to … - Malcolm Gladwell

Emotion goes inside-out. Emotional contagion, though, suggests that the opposite is also true. If I can make you smile, I can make you happy. If I can make you frown, I can make you sad. Emotion, in this sense, goes outside-in.

"My father will sit down and give you theories to explain why he does this or that," the son of the billionaire investor George Soros has said. "But I remember seeing it as a kid, and thinking, At least half of this is bull. I mean, you know the reason he changes his position on the market or whatever is because his back starts killing him. He literally goes into a spasm, and it's this early warning sign."

power has an important limitation. It has to be seen as legitimate, or else its use has the opposite of its intended effect.