There are 2 things that are notable: His reading of other disciplines which are his source of stimulation and secondly his take on the cognitive challenge.
Great interview of Gary Hamel here.
A lot of interesting and controversial insights as he has earned respect as an academic, consultant, entreprenuer and as a real thought leader.
My own understanding of changes in the business world and my view of it got considerably enhanced by reading and observing things from other disciplines especially history and philosophy.
The issue of dealing with cognitive challenge is indeed intriguing. In my interaction with managers, especially senior management, I have often found that their ability to deal with the cognitive challenge to be a key indicator of their ability to create and usher change in their organizations. Often their response seems to be one of denial or one of carrying on with the past albeit with a few tinkering.