Moltmann, "the foremost Protestant theologian in the world" (Church Times), brings his characteristic audacity to this traditional topic and cuts to the heart of the matter with a simple identification: What we experience every day as the spirit of life is the spirit of God. Such considerations give Moltmanns treatment of the different aspects of life in the Spirit a verve and vitality that are concrete and existential. Veteran readers will find here a rich and subtle extension of Moltmanns trinitarian and christological works, even as he makes bold use of key insights from feminist and ecological theologies, from recent attention to embodiment, and from charismatic movements. Newcomers will find a fascinating entrée into the heart of his work: the transformative potential of the future.