Charles Fillmore was an innovative thinker, a pioneer in metaphysical thought at a time when most religious thought in America was entirely orthodox. He was a lifelong advocate of the open, inquiring mind, and he took pride in keeping abreast of the latest scientific and educational discoveries and theories. Many years ago he wrote, "What you think today may not be the measure for your thought tomorrow"; and it seems likely that were he to compile this book today, he might use different…