There is a central human experience which alters all other experiences. It has been called satori in Japanese Zen, moksha in Hinduism, religious enlightenment or cosmic consciousness in the West. The experience is so central that men have spent their lives in search of it. Once found life is altered because the very root of human identity has been deepened. I wish to draw attention to the fact that the still experimental drug d-lysergic acid diethylamide (LSD) appears to facilitate the discovery of this apparently ancient and universal experience. Many ways have been taken to enlightenment. Now I draw your attention to a relatively new way.