"Drug medications consists in employing, as remedies for disease, those things which produce disease in well persons. Its materia medica is simply a lot of drugs or chemicals or dye-stuffs in a word poisons. All are incompatible with vital matter; all produce disease when brought in contact in any manner with the living; all are poisons." -- R.T. TraIl, M.D., in a two and one half hour lecture to members of congress and the medical profession, delivered at the Smithsonian Institute in Washington D.C.