In his writting, Steve seemed painfully aware of the pass of time. Said things like... having only a handful more of 5 year blocks of life to invest wisely, or... working at Google because life's so short to waste at a day job that do not let you exploit your full potential. He is a smart guy, but somehow he seems concerned of being so far away from greatness.

My personal take is that he realized those who can, do; and the others just blog about it.