From the moment that Marie von Sivers met Rudolf Steiner in 1902, their relationship became key to the development of Anthroposophy. Marie Steiner's immense contribution is well known in the fields of eurythmy, speech, and the arts, as well as in her management and publication of Steiner's literary estate--indeed, she assisted in almost every aspect of Rudolf Steiner's work. So why has she been so neglected by the anthroposophic movement? Driven...