Hmmm... well, not to sound too spiritual, but I really *love* this one: "Love is life. All, everything that I understand, I understand only because I love. Everything is, everything exists, only because I love. Everything is united by it alone. Love is G-d, and to die means that I, a particle of love, shall return to the general and eternal source." ~ Leo Tolstoy
(I kind of interpret it as the ultimate 'Do Unto Others,' you know?)