The intuitive signal of the highest order, the one with the greatest urgency, is fear; accordingly, it should always be listened to (more on that in chapter 15). The next level is apprehension, then suspicion, then hesitation, doubt, gut feelings, hunches and curiosity. There are also nagging feelings, persistent thoughts, physical sensations, wonder, and anxiety. Generally speaking, these are less urgent. By thinking about these signals with an open mind when they occur, you will learn how you communicate with yourself.