There is a common misunderstanding that emotions cause us to think illogically. But recent scientific thinking, reviewed by psychologist Roy Baumeister and his colleagues, has placed emotion at the center of wisdom. One reason is that most emotion is felt after an event, which apparently serves to help us remember what happened and learn from it. The more upset we are by a mistake, the more we think about it and will be able to avoid it the next time. The more delighted we are by a success, the more we think and talk about it and how we did it, causing us to be more likely to be able to repeat it.