Joseph Carson, A History of the Medical Department of the University of Pennsylvania (1869)
“ This has been the case with Medicine. The metaphysical connection between the soul and body hung like an incubus upon all endeavors to ascertain the nature of the vital processes, and gave a bias to every effort to determine the secret of their production. For centuries the agency of the rational soul was the phantom of medical philosophers, who deviated from the natural history arrangement of the vital actions devised by Aristotle, and, not content to study them in their manifestations to the senses, plunged headlong into the pit of blind, conjectural subtleties connected with causation. ”
