Conservative columnist David Brooks explores the four commitments that define a life of meaning and purpose: to a spouse and family, to a vocation, to a philosophy or faith, and to a community. Our personal fulfillment depends on how well we choose and execute these commitments. Brooks looks at a range of people who have lived joyous, committed lives, and who have embraced the necessity and beauty of dependence. He gathers their wisdom on how to choose a partner, how to pick a vocation, how to live out a philosophy, and how we can begin to integrate our commitments into one overriding purpose.