When you think about someone having a midlife crisis, you probably think of a man getting divorced, stepping out with a younger woman, and buying a sports car. But my guest today says the often jokey, mockable trope of the midlife crisis we have in our popular culture discounts the fact that the sense of dissatisfaction people can feel in their middle years is quite real, and that the questions it raises are profond, philosophical, and worth earnestly grappling with.