"The wild animal is receiving information for all of the senses, from an uncountable number of sources, every moment of its life. We get it from one only—ourselves. It’s like doing solitary in an echo chamber. People doing solitary do strange things, and the common experience of victims of sensory deprivation is hallucination, I believe that our received cultural wisdom, our anthropocentric beliefs and ideologies, can easily be seen as institutionalized hallucinations.''

John A. Livingston