Introductory Note

This volume is the result of lectures delivered during the month of January, nineteen hundred and twenty-six, upon the Larwill Foundation of Kenyon College, Ohio. In acknowledging the many courtesies received, I wish to express also my appreciation of the toleration shown by the authorities of the College to delay in publication. The intervening period has permitted a full revision and expansion of the lectures as originally delivered. This fact will account for an occasional reference to books published in the interval.

This book grew out of lectures delivered in January 1926 through the Larwill Foundation of Kenyon College, Ohio. I am grateful for the many courtesies I received. I also appreciate the College authorities’ patience with the delay in publication. The extra time has allowed me to fully revise and expand the original lectures. This revision explains the occasional references to books published since the lectures were delivered.