The opening of Preface
This book had its beginning ten years ago in a series of brief discussions supplementing a text used in the class-room. Their purpose was to amend certain theoretical views even then generally questioned by economists, and to present most recent opinions on some other questions. These critical comments evolved into a course of lectures following an original outline, and were at length reduced to manuscript in the form of a stenographic report made from day to day in the class-room. The propositions printed in italics were dictated to the class, to give the key-note to the main divisions of the argument. Repeated revisions have shortened the text, cut out many digressions and illustrations, and remedied many of the faults both of thought and of expression; but no effort has been made to conceal or alter the original and essential character of the simple, informal, class-room talks by teacher to student. To this origin are traceable many conversational phrases and local illustrations, and the occasional use of the personal form of address.