Traditional folklore has spoken of guardian angels who guide and protect us. However, although there are numerous stories of the miraculous intervention of these beings, some people still write them off as myth and superstition. Based on his own personal experience and cognition, Rudolf Steiner spoke of guardian angels and other spiritual beings as a reality. Their existence, he said, is a spiritual and scientific fact that can be researched and studied by clairvoyance. One of his aims was to enable people to connect again with these spiritual beings not only for their own benefit, but also for the benefit of the other kingdom of nature and the whole destiny of the earth's evolution. In his writings and lectures Steiner intended to lead people from belief to recognition, knowledge, and understanding of spiritual beings. In these six specially selected lectures, which until now have lain hidden away in very early publications or journals, he describes the role of the guardian angel and discusses our relationship to the heavenly hierarchies of spiritual beings as a whole and how they shape our human form as a result of their cosmic activity. As many people today are awakening to angelic guidance in their daily lives and are seeking it consciously, these lectures will help them to understand their experiences and to make their communication more conscious.