accompanied by altered behavior, it remains only words in the air. We are a verbal species, fond of conveying our minutest thoughts. (Remember the last time you listened to someone talking into a cell phone?) We attach excessive importance to promises. Whenever, as happens frequently, I point out to people the discrepancy between what they say they want and what they actually do, the response is surprise and sometimes outrage that I will not take their expressions of intent at face value but prefer to focus on the only communication that can be trusted: behavior.