Michael Marder is Ikerbasque Research Professor of Philosophy at the University of the Basque Country (UPV/EHU), Vitoria-Gasteiz. His work spans the fields of environmental philosophy and ecological thought, political theory, and phenomenology, with books including Dust (2016), Heidegger: Phenomenology, Ecology, Politics (2018), and Pyropolitics in the World Ablaze (2020).

"Michael Marder brings Hildegard's creativity to light and to life, highlighting what is unique about her and, especially, what makes her such a needed voice that should be heard today."—Willemien Otten, University of Chicago Divinity School "A brilliant meditation on viriditas, where materiality and spirituality meet, and truly a 'resonance chamber' of themes that explore the full range of Hildegard's thinking, from roots to flowers."—Charles M. Stang, Harvard Divinity School "The wordviriditas is important to understand here. The author explains that it literally means 'the greening green,' and figuratively it means 'a self-refreshing vegetal power of creation ingrained in all finite things.' That's a mouthful, but it's also rich and beautiful. Take a moment to ponder such a world. This is St. Hildegard of Bingen's vision of what we inhabit, whether we realize it yet or not... Michael Marder points to the transformational quality of such teachings, for Christians and everyone who seeks to integrate the physical and the spiritual in their lives."—Jon M. Sweeney, Spirituality & Practice "I consider this to be one of the—if not the—most significant books of ecotheology to have appeared in recent years... Rather than attempt to explain Hildegard's many-layered analogies between divine spirit and vegetal mattering, Marder seeks to narrate the conditions under which those analogies could be true. The result is a book that is at once faithful to Hildegard's words (Green Mass is a close reading that cites source texts in detail, and dispenses with footnotes) and promiscuous in hermeneutic."—Simone Kotva, Worldviews: Global Religions, Culture, and Ecology "This is an extraordinary work of ecotheology. Not only is it a book, it is also a meditation at the meeting point of materiality and spirituality, a resonance chamber of Peter Schuback's musical compositions, and an invitation to encounter the present world through medieval mindsets."—Luke Penkett, The Way

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Michael Marder is Ikerbasque Research Professor of Philosophy at the University of the Basque Country (UPV/EHU), Vitoria-Gasteiz. His work spans the fields of environmental philosophy and ecological thought, political theory, and phenomenology, with books including Dust (2016), Heidegger: Phenomenology, Ecology, Politics (2018), and Pyropolitics in the World Ablaze (2020).

"Michael Marder brings Hildegard's creativity to light and to life, highlighting what is unique about her and, especially, what makes her such a needed voice that should be heard today."—Willemien Otten, University of Chicago Divinity School "A brilliant meditation on viriditas, where materiality and spirituality meet, and truly a 'resonance chamber' of themes that explore the full range of Hildegard's thinking, from roots to flowers."—Charles M. Stang, Harvard Divinity School "The wordviriditas is important to understand here. The author explains that it literally means 'the greening green,' and figuratively it means 'a self-refreshing vegetal power of creation ingrained in all finite things.' That's a mouthful, but it's also rich and beautiful. Take a moment to ponder such a world. This is St. Hildegard of Bingen's vision of what we inhabit, whether we realize it yet or not... Michael Marder points to the transformational quality of such teachings, for Christians and everyone who seeks to integrate the physical and the spiritual in their lives."—Jon M. Sweeney, Spirituality & Practice "I consider this to be one of the—if not the—most significant books of ecotheology to have appeared in recent years... Rather than attempt to explain Hildegard's many-layered analogies between divine spirit and vegetal mattering, Marder seeks to narrate the conditions under which those analogies could be true. The result is a book that is at once faithful to Hildegard's words (Green Mass is a close reading that cites source texts in detail, and dispenses with footnotes) and promiscuous in hermeneutic."—Simone Kotva, Worldviews: Global Religions, Culture, and Ecology "This is an extraordinary work of ecotheology. Not only is it a book, it is also a meditation at the meeting point of materiality and spirituality, a resonance chamber of Peter Schuback's musical compositions, and an invitation to encounter the present world through medieval mindsets."—Luke Penkett, The Way

• PreludeVergesAnalogiesResonancesMissivesArdenciesAnarchiesKissesPostlude