William E. Gray is one of the leading authors of New Thought movement. Know Your Magnetic Field is one of Gray's most notable works and is considered to be one of the top 100 most Inspirational written. In Know Your Magnetic Field gray addressed the issue of diseases and his belief that all illness can be healed by using mental abilities inherent in everyone. "The theory presented in this book is new only in the sense that it has been revitalized of recent date. It is, in fact, as old as the world. Those who have seen the results of this theory in practice have called it miraculous. Others who have yet to see and learn and understand have called it fakery." Read Know Your Magnetic Field and decide for yourself.