Authors:

There is only one kind of discipline, and that is the perfect discipline. As a leader, you must enforce and maintain that discipline; otherwise, you will fail at your job.

Vince Lombardi (2003). “What It Takes to Be #1 : Vince Lombardi on Leaders: Vince Lombardi on Leadership”, p.40, McGraw Hill Professional
There is only one kind of discipline, and that is the perfect discipline. As a leader, you must enforce and maintain that discipline; otherwise, you will fail at your job.