If I were asked to list the major intellectual breakthroughs of the past half-century, I would certainly include the revolution in our understanding of emotion.

For thousands of years, it was common in Western thought to imagine that there was an eternal war between reason and our emotions. In this way of thinking, reason is cool, rational and sophisticated. Emotions are primitive, impulsive and likely to lead you astray. A wise person uses reason to override and control their primitive passions.