"Every one of the geezers who continues to play a leadership role has one quality of overriding importance: neotony. The dictionary definition is that neotony, a zoological term, involves "the retention of youthful qualities throughout old age." It is more than merely retaining a youthful appearance, although that is often part of it. Neotony is the retention of all those wonderful qualities that we associate with youth: curiosity, playfulness, eagerness, fearlessness, warmth, energy."