The Amazing Secrets of the Yogi: A Study in Concentration and Mental Discipline. Este artículo no está disponible.The Amazing Secrets of the Yogi: A Study in Concentration and Mental Discipline

In this volume I have embodied many valuable secrets, which have been collected with great care from the treasured wisdom of Ancient India. These secrets if put into daily practice will bring you added health, greater success and unbounded happiness. The important facts contained in this volume will place a sceptre of power in your hands with which you can open a pathway to health, success and the life abundant.-Charles F. Haanel.