Ever since nature and consciousness were separated in the late Middle Ages, giving rise to a science of matter alone, the spiritual beings who are the universe have felt abandoned and unable to complete their work, for this work depends for its success on human collaboration. At the same time, human beings have also felt abandoned, condemned to a speck of dust in an infinitely decaying universe. In these remarkable lectures, Rudolf Steiner reestablishes the human being as a participant in an evolving, dynamic universe of living spiritual beings: a living universe, whole and divine. And he does so in concrete images, capable of being grasped by human consciousness as if from within | The Spiritual Hierarchies and the Physical World by Rudolf Steiner, Paperback | Indigo Chapters