A philosopher journeys back to the mystics to learn how to live with uncertainty in the twenty-first centuryHow do we live when we don’t know what to believe, or who to believe, or how we could even know? In this deeply felt book, philosopher James K. A. Smith explores how radical uncertainty can be liberating, opening us to another way of being. The pain of his own profound uncertainty led Smith to a surprising source for modern consolation: the mystical experiences of St. Teresa of Ávila, St. John of the Cross, and the author of The Cloud of Unknowing. These mystics testify to a deeper truth beneath distraction, anxiety, and fear: love. Drawing on ancient traditions of contemplation as well as on contemporary novels, poetry, film, and paintings, Smith speaks to the fundamental yearnings that persist in late modernity, including the philosophical quest for knowledge and certainty. He shows us how the gifts of the Christian contemplative tradition and the riches of creative works embody a liberating spirituality that recovers the fullness of being human. In bringing a philosopher’s questions to the mystics, Smith brings a mystical heart back to philosophy.