Doblin decided his calling in life was to become a psychedelic therapist. But after the banning of MDMA in 1985, that dream became unachievable without a change in federal laws and regulations, so he decided he’d better first get a doctorate in public policy at Harvard’s Kennedy School. There, he mastered the intricacies of the FDA’s drug approval process, and in his dissertation plotted the laborious path to official acceptance that psilocybin and MDMA are now following.