“At one point I took five people and we locked ourselves in a building for three weeks and we took 400 micrograms of LSD every four hours. That is 2400 micrograms of LSD a day, which sounds fancy, but after your first dose you build a tolerance; there’s a refractory period. We finally were just drinking out of the bottle, because it didn’t seem to matter anymore. We’d just stay at a plateau. We were very high.