"Suzuki Roshi, I've been listening to your lectures for years," a student said during the question and answer time following a lecture, "but I just don't understand. Could you just please put it in a nutshell? Can you reduce Buddhism to one phrase?" "Everything changes," he said. Then he asked for another question. The essential message is that life and all other things are impermanent. And therefore it's not about letting go, it's really about not grasping or getting attached in the first place.