Bill Gates in His Second Chapter

"I’ve had two careers and I’m lucky that both of them have been quite amazing. I got to see the PC and internet revolutions, now I see child death rates coming down."   - Bill Gates

Imagine. After putting a computer on every desk, he turns around and solves a world problem like polio. This is not just success that's world-class, but pioneering success -- in both careers or chapters, the man is new class.