"In no branch of human knowledge has there been a more lively increase of the spirit of research during the past few years than in the study of Psychology, Concentration and Mental Discipline. Many points of "mental doctrine" have been passing afresh through the crucible; plain instruction is a popular cry, and, in some directions, a real requirement of the age; the requests for authentic lessons in Thought Control, Mental Discipline and Concentration have never before been so great as in recent years."-From the Preface.

From the Back Cover

Having financial difficulties? Afflicted with chronic stage fright? Suffering from a bad memory? Perhaps your difficulties are due to a lack of mental discipline. If so, this is the book you've been seeking. Filled with practical advice and exercises that will improve your mind control, L.W. de Laurence's The Master Key, first published in 1914, unlocks the door to the mysteries they tried to keep secret from you for centuries.

Learn how concentrated thought will "unfold (your) individuality to the full."

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