Love Letters from a Widower. the Mystery of Soul Mates in Light of Ancient Wisdom - Paperbackby Xavier Perez Pons (Author) Theologians maintain that just the presence of a feeling of God in Man's heart, is, in itself, a proof of His existence. Since as they assure us that feeling is innate, it's actually a reminiscence. Well, if it's as they say, Blanca, then, along with a feeling of God (and, as I hope to demonstrate during the course of these letters, closely bound to it), there exists in Man's heart another innate feeling of no less power.