In twenty-four parts with questionnaire & glossary. A study of the creative processes of thought & how to apply them is of supreme importance to each one of us. This knowledge is the means whereby the evolution of human life on earth may be hastened & uplifted in the process. The Master Key is here given to the world as a means of tapping the great cosmic intelligence & attracting from it that which corresponds to the ambitions & aspirations of each reader. The Master Key will help you solve your problem.