The author is grateful to the following publishers for permission to quote copyrighted material, credit for which appears in the notes.

Abingdon-Cokesbury Press Oxford University Press Harper & Brothers The Macmillan Company Jennings & Graham Co. Nazarene Publishing House Charles Scribner & Sons

W. W. Norton & Son, Inc. Christian Witness Co.

Mr. Dale Carnegie granted permission to quote from his article which appeared in Your Life magazine.

I am indebted, too, to my secretary, Miss Aletha Bonner, and to Professor Marian Washburn, for their help in preparing the manuscript. Also, many have indirectly given suggestions and direction in the formation of these lectures during the past few years. Especially am I indebted to the Holy Spirit for His special illumination of truth in some hours of trial and darkness in the hours of suffering and nervous collapse.

The Author