“I suspect that someday the scientific nature of spirits will be known. I suspect that they are matter and energy in sophisticated balance as is everything else in our universe, and that they are no more magical than electricity or radio waves, or quarks or atoms, or voices over the telephone—the things that seemed supernatural only two hundred years ago. In fact the poetry of modern science has helped me to understand them in retrospect better than any other philosophical tool. Yet I cling to my old language rather instinctively.
