Thinking fast and slow. A book written by an Economics Nobel Prize winner about the 2 decision making systems everyone has. The quick, instintive and emotional one. And the slow, logical, deliberate one. It is amazing how much we can learn about economics, politics, etc... just by studying behavior and peoples minds.
Man... Couldn't agree more! Specially in economics, where emotion comes in frequently and you need to know how to deal with it!