“But what we don’t realize is that, far from being frivolous or selfish, the pursuit of fun will help us achieve all of these goals. Life is not a zero-sum equation: we can care about fun and be conscientious citizens who are committed to improving the world—indeed, fun can give us more energy with which to do so. And if we want our own lives to be satisfying and joyful, True Fun isn’t optional. It shouldn’t be an afterthought. It should be our guiding star.”