Are language and consciousness co-evolving? Can psychedelic experience cast light on this topic? In the Western world, we stand at the dawn of the psychedelic age with advances in neuroscience; a proliferation of new psychoactive substances, both legal and illegal; the anthropology of ayahuasca use; and new discoveries in ethnobotany. From scientific papers to the individual trip reports on the Vaults of Erowid and the life work of Terence McKenna, Alexander and Ann Shulgin, and Stanislav Grof, we are converging on new knowledge of the mind and how to shift its functioning for therapeutic,...