We are unavoidably hope-based creatures. Imagine two women given the same boring task to do eight hours a day in the same conditions - but you tell one woman she will be paid £15,000 for a year of this work, and you tell the other that she will be paid £15 million. Each woman in identical circumstances will be experiencing those circumstances in completely different ways, because what we believe about the future determines how we live in the present. In this dynamic new book, New York pastor and bestselling author Tim Keller explores the biblical understanding of hope. A profound grasp of what we are hopeful for, he argues, can re-energise and transform us personally, can help us face death, can influence our community practices with regard to sex, money and power - and even be applied globally, to renew our culture.