W. D. Wattles was an American author and a prominent figure in the New Thought movement, best known for his influential work, 'The Science of Getting Rich.' Published in 1910, this book laid the groundwork for modern self-help literature by presenting a philosophy that combined personal development with financial success. Wattles argued that wealth is a natural outcome of one's thoughts and actions, emphasizing the importance of a positive mindset and the application of specific principles to achieve prosperity. In addition to 'The Science of Getting Rich,' Wattles wrote several other works that explored similar themes, including 'The Science of Being Great' and 'The Science of Being Well.' His writings reflect a belief in the power of the mind to shape reality, advocating for a proactive approach to life and success. Wattles' ideas have influenced countless self-help authors and motivational speakers, making him a significant figure in the development of self-improvement literature. His legacy endures as a foundational voice in the pursuit of personal and financial empowerment.