Emanuel Swedenborg (1688-1772) was a Swedish scientist, inventor, and theologian who made significant discoveries in many of the natural sciences, including astronomy, anatomy, geology, and mineralogy. At age fifty-five, his intensive search for answers to ultimate questions culminated in an awakening that gave him a unique insight into the workings of the spiritual world. He spent the remainder of his life writing about his experiences and how human beings can come to a deeper awareness of the divine. Swedenborg's ideas have influenced people as diverse as Helen Keller, Johnny Appleseed, Will...