DR YESHAYAHU (JESAIAH) BEN-AHARON - spiritual scientist, philosopher and social activist - is founder of the anthroposophical community in Harduf, Israel, co-founder 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 The Spiritual Event of the Twentieth Century, The New Experience of the Supersensible, America's Global Responsibility, The Event in Science, History, Philosophy & Art and Spiritual Science in the 21st Century.