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

The signature of mediocrity is chronic inconstancy. The signature of greatness is a disciplined and consistent focus on the right things.

If we only have great companies, we will merely have a prosperous society, not a great one. Economic growth and power are the means, not the definition, of a great nation.

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

Focusing solely on what you can potentially do better than any other organization is the only path to greatness.