In the shadow of a looming global environmental catastrophe humanity is at an unprecedented crossroad where crucial and difficult decisions must be made about how we are to live. This book questions where the desire for certainty and mastery is taking us and argues that reliance on technology and information alone cannot avoid an ecological catastrophe. It attends to an existential poverty of spirit that, it suggests, is at the root of contemporary problems. It tackles the association between a metaphysical void, with its growing sense of meaninglessness, and the ecological predicament. While many find the consolations of traditional religion increasingly untenable, a hunger for a spiritual dimension in life persists. In a rare excursion, yet one which continues the uniquely human search for a transcendent ground of being, the book explores an unfamiliar kind of thinking which shelters and liberates the poetic imagination that counters the modern malaise. In a scholarly yet accessible account van Leeuwen uncovers from Martin Heidegger's middle/late philosophy an extraordinary pathway of transformative thinking where this imagination is nurtured.