William Walker Atkinson 
Dynamic Thought (translated) [EPUB ebook] 

From the preface: “This is a strange book. It is a marriage between the Ancient Occult Teachings and the latest and most advanced conceptions of Modern Science-a strange union, for the parties are of completely different temperaments. One might expect the marriage to prove disastrous, were it not for the fact that a link has been found that gives them a bond of common interest.”