Smaller denominations also have similar treatments in passing in their key writings: Christian Science and the Course in Miracles treat extraterrestrials as effectively brother spiritual beings in a non-absolute physical experience, the founder of the former writing, "The universe of Spirit is peopled with spiritual beings,...",[5] and Emanuel Swedenborg wrote, "Anyone with a sound intellect can know from many considerations that there are numerous worlds with people on them. Rational thought leads to the conclusion that massive bodies such as the planets, some of which are larger than our own earth, are not empty masses created merely to wander aimlessly around the sun, and shine with their feeble light on one planet. No, they must have a much greater purpose than that. ...