“For the present, as far as we know, gravity effectually exists only within our Cosmos. But conceptually it is independent of material existence and therefore eternal. Now substitute words such as “love,” “compassion,” “empathy,” “trust,” or “morality” for the word “gravity.” All those words, just like gravity, describe things that are real enough to powerfully affect our lives even though they cannot be dissected and observed under a microscope. They, too, are eternal.”