Mind at Large is a concept proposed by Aldous Huxley to help interpret psychedelic experience. He maintained that the human mind filters reality under normal circumstances and that psychedelic drugs remove the filter, exposing the user to a Mind at Large.
Huxley introduced the concept of Mind at Large in his books The Doors of Perception (1954) and Heaven and Hell (1956). It was influenced by the ideas of the philosopher C. D. Broad.
Huxley held that psychedelic drugs open a 'Reducing Valve' in the brain and nervous system that ordinarily inhibits Mind at Large from reaching the conscious mind.[1] In the aforementioned books, Huxley explores the idea that the human mind has evolved to filter wider planes of reality, partly because handling the details of all of the impressions and images coming in would be unbearable and partly because it has been taught to do so. He believes that psychoactive drugs can partly remove this filter, which leaves the drug user exposed to Mind at Large.[2]
During an experiment conducted by the British psychiatrist Humphrey Osmond in 1953, Huxley was administered the psychedelic drug mescaline, and was prompted by Osmond to comment on the various stimuli around him, such as books and flowers.[3] Huxley recorded aspects of their conversation in The Doors of Perception, focusing on what he said in the recordings. He observed that everyday objects lose their functionality, and suddenly exist "as such"; space and dimension become irrelevant, with perceptions seemingly being enlarged, and at times even overwhelming.
In The Doors of Perception, Huxley cites a 1949 paper by Cambridge Philosopher C. D. Broad ('The Relevance of Psychical Research to Philosophy'):[4]
The Doors of Perception includes Huxley's descriptions of his experiences with mescaline and includes a total of eight references to 'Mind at Large'. In modern psychedelic research, the closest comparator is that of Oceanic Boundlessness.[5]
In The Doors of Perception, Huxley stated:
In 2009, journalist Andrew Sullivan published excerpts from the writing of Barbara Bradley Hagerty in The Atlantic. In the excerpts, Hagerty connects the research of neuroscientist Andrew Newberg on religious experiences in Catholic nuns and Buddhist monks to Huxley's concept of Mind at Large.[6]