"Traditions or belief or theology cannot help us if we are to attain knowledge of the reality of higher beings through spiritual self-development and independence. Adherence to any such tradition would hinder our spiritual freedom, as would any categorized teaching or doctrine about the higher hierarchies.... Rudolf Steiner's descriptions do not form a doctrine; this would be antagonistic to a new knowledge of the angels based on our spiritual individuality. The Illumine a path rather than asserting a truth." --Wolf-Ulrich KlünkerReligious and spiritual writings have always referred to beings of the spiritual hierarchies, especially those understood in Christian tradition as Angels, which are the closest to human beings and act as invisible human guides and companions. They influence the lives of individuals, the evolution of humanity, and the cosmos as a whole.Through his own clairvoyant vision, Rudolf Steiner confirmed the existence of such spiritual beings and showed how modern minds can gain access to their world. As he explains in these inspiring lectures, it is important for us to understand and cooperate with the work of the angels today, as this is crucial for the continued development of humanity.This collection of lectures was first published in German as Vom Wirken der Engel und anderer hierarchischer Wesenheiten by Verlag Geistesleben, Stuttgart (1991).