Have you worked with him?
I had the privilege of working with him for a little over a year.
He was respectful, analytical, and only thought about what is best for Amazon and Amazon's customers.
I don't think his own aggrandizement or what's best for him enters into the calculus of his day-to-day work one itoa.
He's an untiring as well. I realized I had gone far beyond my peter principle when I was working with him.