“So great has been man's progress that today all civilized nations have their great universities, with highly trained specialists, who devote a lifetime to the study of some minute detail of a particular department. His ideas have become so extended and complex that hundreds of thousands of words are necessary to give expression to his thoughts, and libraries with millions of volumes contain only a fraction of his written convictions. ...the knowledge of the average man on the street is incomparably higher than that of the eminent scholar of a few centuries ago.”