Steiner was one of Madame Helena Blavatsky's followers until her theosophy movement declared Krishnamurti to be an avatar of Jesus. He defected and started anthroposphy. It's part of the spiritualist baggage of the Newage movement today. There's a book which is critical rather than hagiographic, by Peter Washington called Madame Blavatsky's Baboon: A History of the Mystics, Mediums, and Misfits Who Brought Spiritualism to America.