The difference between a good leader and a great leader is humility.

There is a sense of exhilaration that comes from facing head-on the hard truths and saying, "We will never give up. We will never capitulate. It might take a long time, but we will find a way to prevail."

A culture of discipline is not a principle of business, it is a principle of greatness.

Those who build great companies understand that the ultimate throttle on growth for any great company is not markets, or technology, or competition, or products. It is one thing above all others: the ability to get and keep enough of the right people.

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

People are not your most important asset....the right people are.

Level 5 leaders are a study in duality: modest and willful, humble and fearless.