The way in which it, that most marvelous of all the inventions of the gods—the mind of man—has grown through its reactions to its experiences is one of the basic facts, and one of the inspiring facts, of human history. That diseases and injuries, and skin diseases in particular, have played a large part in this progress is a major fact in the history of civilization which medicine may contemplate with satisfaction—yes—but which must be accepted also with a sober sense of the reponsibility which it has now and has always had.—William Allen Pusey, 1934.1