Quotes about excellence come from all areas and disciplines in our lives.
From ancient thought-leaders:
“Excellence is an art won by training and habituation. We do not act rightly because we have virtue or excellence, but we rather have those because we have acted rightly. We are what we repeatedly do. Excellence, then, is not an act but a habit.”--Aristotle
"The quality of a person's life is in direct proportion to their commitment to excellence, regardless of their chosen field of endeavor." --Vince Lombardi
"Be a yardstick of quality. Some people aren't used to an environment where excellence is expected." -- Steve Jobs