Earth-Friendly collects the fruits of a lifetime of study and teaching in search of a holistic, organismic, living science, respectful of the sacredness of nature and the ubiquity of the spirit. As a biology philosopher, Sister Adrian's first teachers were Aquinas and Aristotle; later she came to know the work of Goethe and Rudolf Steiner. Earth-Friendly traces the development of Sister Adrian's conviction that "the spiritual...