"The truths of the Church are truths, they're not just 'the Church truths.' They have worked this out, not only from a faith standpoint, but from a factual standpoint. One of the startling realities can be that: not only do I know that God exists, but I can prove it...factually and without exception. When you hear the case, you cannot disagree with this. All you can do is deny it. It's right there. It's so clear," said Frank Cronin, author of "The World According to God: The Whole Truth About Life and Living" (Sophia Institute Press). Learn more about Cronin's book and his reversion to the Catholic faith by watching his interview on EWTN's "The Journey Home."