Translator’s Note
The German original is replete with references to works especially in the German language, the author having with great care quoted title and page whenever referring to an author. Since many of these references are of value only to those familiar with the German, they have been abbreviated or omitted in this English version, whenever they would seem to needlessly encumber its pages.
Those desirous of verifying quotations will be enabled to do so in all instances by a reference to the German original.