Perhaps the central task of the leader of leaders thus becomes the development of other leaders.

A leader is someone whose actions have the most profound consequences on other people's lives, for better or worse, sometime forever and ever.

A new leader has to be able to change an organization that is dreamless, soulless and visionless... someone's got to make a wake up call.

The leader...is rarely the brightest person in the group. Rather they have extraordinary taste, which makes them more curators than creators. They are appreciators of talent and nurturers of talent and they have the ability to recognize valuable ideas.

The manager accepts the status quo; the leader challenges it.

Make sure you have someone in your life from whom you can get reflective feedback.

This duality, making yourself better while teaching and developing others' judgment capabilities, is the key to leadership that is both productive and principled.