Not all time in life is equal. How many opportunities do you get to talk about what your life is going to add up to with people thinking about the same question?

Throw leaders into an extreme environment, and it will separate the stark differences between greatness and mediocrity.

It took Einstein ten years of groping through the fog to get the theory of special relativity, and he was a bright guy.

For, in the end, it is impossible to have a great life unless it is a meaningful life. And it is very difficult to have a meaningful life without meaningful work.

We must reject the idea... Well-intentioned, but dead wrong... That the primary path to greatness in the social sectors is to become "more like a business." Most businesses... Like most of anything else in life... Fall somewhere between mediocre and good.

Discipline should amplify creativity rather than stifle it.

Great companies foster a productive tension between continuity and change.