If there is an enduring figure emblematic of the consciousness revolution of the 1960s and 70s, it is arguably the Harvard professor and LSD researcher-turned-spiritual leader born Richard Alpert but known the world over as Ram Dass. With Timothy Leary, his colleague in the Harvard psychology department, he forever changed a generation of Americans through his explorations with psilocybin, LSD-75, and other psychedelics before reinventing himself as a spiritual teacher and humanitarian—a bhakti yogi with love as his path. When Ram Dass died on Sunday evening, one of the most beloved voices of the counterculture fell silent. He was 88...