Excerpt from University Lectures, Vol. 7: Delivered by Members of the Faculty in the Free Public Lecture Course, 1919-1920Prefatory words are scarcely necessary for the lectures contained in the present volume. They follow the course adopted in all previous years. These lectures bring the best thought of some of the most distinguished teachers in the teaching staff of the University of Pennsylvania. It is a pleasure to lay them before the friends of the University.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.