 They are always trying to communicate with us, George. But the problem is, is most humans are too busy to hear. You know, we have so much noise in our head and the world around us that sometimes we have to stop to hear that silent whispering. It's a very soft whisper that we hear, usually. Not always. Well, how do we know that whisper's coming from an angel and it's not our subconscious mind playing tricks with us?