Middle-agedness is a curious phenomenon. In many ways, one is at one’s peak and also at the early stages of decline. There is much to do, but also dozens of paths irretrievably untaken. Successes, but also regrets. It’s no wonder that the idea of a midlife crisis is so familiar. But midlife is not commonly a subject of explicit philosophical study. In Midlife: A Philosophical Guide (Princeton University Press, 2017), Kieran Setiya develops a philosophical account of the crises associated with midlife that combines the precision of a philosophical treatise with the narrative and advice-giving of a self-help manual. The result is a fascinating exploration of the challenges that come with growing old.Learn more about your ad choices. Visit megaphone.fm/adchoices