Excerpt from Trillion Dollar Coach:

People who want to get the best out of a coaching relationship need to be coachable. Bill’s aproach to coaching was rooted in his mind-set that almost all people have value, not based on their title or their role, but on who they are. His job was to make them better. But only if they were coachable. And, Jonathan’s experience notwithstanding, that was based on a lot more than the ability to pull a pithy quote out of the ether (or nether) in a pinch