In these much-valued lectures, Rudolf Steiner begins by positing the question, Why investigate the spiritual worlds at all? He goes on to explore the contemporary need for spiritual knowledge and the authentic paths that can lead to it. Speaking in Torquay, England, at the International Summer School organized by his friend and colleague D.N. Dunlop, Steiner surveys the differences in various types of consciousness - from ancient to modern times, in waking and dreaming, from space into time - and the changes that have taken place in relation to knowledge and science in the course of history. He goes on to discuss the Mystery nature of crystallized minerals and metals such as copper and silver, and their relationship to the planets. He also describes how the ages of life can become organs of perception. In a dramatic conclusion Steiner explains the role of moon beings, ahrimanic elemental beings, and the true nature of mediumship, ectoplasm and spiritual possession. Presented here in a fresh translation that corrects many errors in previous editions, the text is complemented with notes, an introduction by Paul King and an index. Lectures include: Nature is the Great Illusion. "Know Thyself"; The Three Worlds and their Reflected Images; Form and Substantiality of the Mineral Kingdom in relation to Human Levels of Consciousness; The Secret of Research into other Realms through the Metamorphosis of Consciousness; The Inner Enlivening of the Soul through the Qualities of Metals; Initiation Science; Star Knowledge; Possible Aberrations in Spiritual Research. (Eleven lectures, 11-22 Aug. 1924, GA 243)
Rudolf Steiner (1861-1925) called his spiritual philosophy "anthroposophy", meaning "wisdom of the human being". As a highly developed seer, he based his work on direct knowledge and perception of spiritual dimensions. He initiated a modern and universal "science of spirit", accessible to anyone willing to exercise clear and unprejudiced thinking. From his spiritual investigations Steiner provided suggestions for the renewal of many activities, including education (both general and special), agriculture, medicine, economics, architecture, science, philosophy, religion and the arts. Today there are thousands of schools, clinics, farms and other organizations involved in practical work based on his principles. His many published works feature his research into the spiritual nature of the human being, the evolution of the world and humanity, and methods of personal development. Steiner wrote some 30 books and delivered over 6000 lectures across Europe. In 1924 he founded the General Anthroposophical Society, which today has branches throughout the world.
