In the architecture of Rudolf Steiner’s great cosmological temple, this extraordinary course of lectures on spiritual beings forms the central pillar, taking its place with other important texts such as the fourth chapter of An Outline of Esoteric Science (CW 13); The Spiritual Hierarchies and the Physical World (CW 136); and Inner Experiences of Evolution (CW 132). These works outline a revolutionary angelological cosmology and lie at the heart of Steiner’s mission to transform our understanding of the world by offering a new, non-dual, phenomenological path to a contemporary divine-spiritual-physical cosmology that is angelological and theophanic. Steiner’s approach is “contemporary” in that, being continuous with the most ancient understanding of the cosmos, he also discovers it for himself, through his own experience and consciousness, and expresses it in his own words with a logic and language appropriate to our time. Thus, he teaches us, his readers, to do the same. According to Rudolf Steiner, the world is made up of “beings.” This includes the very ground of the world itself, the “Father being.” His cosmology or angelology is personal, and it is known in relationship. Therefore, he presents it in terms of conditions and acts of consciousness and in relation to the divine spiritual beings whose conditions and activities they are. The spiritual world is always a world of beings. The twin realizations go together—that “I am an ‘I’” and that “reality is comprised of other “I” beings. Cosmology is angelology. Spiritual beings define all experience of reality.

10 lectures, Helsinki, April. 3-14, 1912 (CW 136) In the architecture of Rudolf Steiner's great cosmological temple, this extraordinary course of lectures on spiritual beings forms the central pillar with other important texts such as the fourth chapter of An Outline of Esoteric Science (CW 13); The Spiritual Hierarchies and the Physical World (CW 136); and Inner Experiences of Evolution (CW 132). These works--outlining a revolutionary angelological cosmology--are at the heart of Steiner's mission to transform our understanding of the world by laying down a new, non-dual, phenomenological path to a contemporary divine-spiritual-physical cosmology that is angelological and theophanic. For Steiner, what constitutes the world are "beings"--including the ground of the world itself, the "Father being." Steiner's cosmology or angelology is personal, and it is known in relationship; therefore, he presents it in terms of states and deeds of conscious, and of the divine-spiritual beings whose states and deeds they are. The spiritual world is thus always a world of beings. The twin realizations--I am an "I" being and reality is constituted of other "I" beings--go together. Cosmology is angelology. Spiritual beings define experience of the nature of reality. In these lectures, the reader is led through a series of meditations to recognize these spiritual beings and come to know their deeds. Steiner's approach is "contemporary" in that, while continuous with the most ancient understanding of the cosmos, he discovers it for himself, out of his own experience and consciousness, and expresses it in his own words with a logic and language appropriate to our time. Thus he teaches us, his readers, to do the same. In these lectures, the reader is led through a series of meditations to recognize and come to know the activities and beings of the nine angelic hierarchies: seraphim (Spirits of Love) cherubim (Spirits of Harmony) thrones (Spirits of Will) dominions (Spirits of Wisdom) virtues (Spirits of Movement) powers (Spirits of Form) principalities (Spirits of Personality) archangels (Spirits of Fire) angels (Sons of Life) Steiner's achievement in these lectures, as Valentin Tomberg said, "cannot be compared with the accomplishment of any contemporary seer or thinker, or with any of the Middle Ages or antiquity. It towers over them." This book is a translation from German of the book Die geistigen Wesenheited in den Himmelsk rpern und Naturreichen (GA 136). Translator unknown; original translation revised by Marsha Post.

Based on knowledge attained through his highly-trained clairvoyance, Rudolf Steiner contends that folk traditions regarding nature spirits are based on spiritual reality. He describes how people possessed a natural spiritual vision in ancient times, enabling them to commune with nature spirits. These entities - which are also referred to as elemental beings - became immortalised as fairies and gnomes in myth, legend and children's stories. Today, says Steiner, the instinctive understanding that humanity once had for these elemental beings should be transformed into clear scientific knowledge. He even asserts that humanity will not be able to reconnect with the spiritual world if it cannot develop a new relationship to the elementals. The nature spirits themselves want to be of great assistance to us, acting as 'emissaries of higher divine spiritual beings'.