The Effects of Esoteric Development: Ten Lectures at The Hague, March 20-29, 1913

Beginning with questions regarding the body's experience of food and drink - meat, coffee, alcohol - Steiner lays out the progression of anthroposophic spiritual inner work, up to direct perception of 'Paradise' and the Holy Grail. He discusses the role of human beings in our evolution that takes place between the forces of Lucifer and Ahriman.