A special conference took place in Bologna in spring 2011, marking the hundredth anniversary of a unique lecture Steiner delivered to a philosophically trained audience in the same city. In his key exposition, Steiner had given a concise description of the spiritual-scientific theory of knowledge as well as a brief outline of the anthroposophic path of training. In his contribution to the 2011 congress, Prokofieff tackles two principal aspects. On the one hand, he describes how Steiner's Bologna lecture contained the essential foundations for a new "science of the human ego" (human "I"). On the other hand, Prokofieff states that Steiner was the first person to transform this theory into a practical path of knowledge, following it to its very conclusion. Thus, the words of Steiner's lecture were based entirely on personal experience. Together with a transcript of Steiner's full Bologna lecture, Prokofieff's lecture is reproduced here in an expanded version. In addition, this volume features Steiner's important "summaries of essential points," in which he develops and connects some of his key thoughts with further aspects of Anthroposophy, especially in relation to their Christological foundations.