Blake's work, which became part of the wider movement of Romanticism in late 18th and early 19th century European culture, is filled with religiousvisions.
Crusoe memorably confronts ocean waves, earthquakes and religiousvisions, but he also nurses a summer fever, using tobacco and rum as an improvised remedy to clear his head.
These reports suggested that religiosity originates specifically in the brain's temporal lobe, and that religiousvisions are the result of epileptic seizures that affect this part of the brain.