Dr. Yeshayahu (Jesaiah) Ben-Aharon, spiritual scientist, philosopher and social activist, is founder of the anthroposophic community in Harduf, Israel, cofounder of the Global Network for Social Threefolding, director of Global Event College, and contributor to the School of Spiritual Science. He is the author of Cognitive Yoga, Spiritual Science in the 21st Century, The Spiritual Event of the Twentieth Century, The New Experience of the Supersensible, America's Global Responsibility, and The Event in Science, History, Philosophy, and Art