Marketing is the act of making change happen. Making is insufficient. You haven’t made an impact until you’ve changed someone. - Seth Godin

So great leaders don't try to please everyone. Great leaders don't water down their message in order to make the tribe a bit bigger. Instead, they realize that a motivated, connected tribe in the midst of a movement is far more powerful than a larger group could ever be.

Managers manage a process they’ve seen before, and they react to the outside world, striving to make that process as fast and as cheap as possible. Leadership, on the other hand, is about creating change that you believe in.

Great teachers are wonderful. They change lives. We need them. The problem is that most schools don’t like great teachers. They’re organized to stamp them out, bore them, bureaucratize them, and make them average.