"Strive for progress, not perfection."

— Unknown

"Perfection is not attainable, but if we chase perfection we can catch excellence."

— Vince Lombardi

"To improve is to change; to be perfect is to change often."

— Winston Churchill

"And now that you don't have to be perfect, you can be good."

— John Steinbeck

"Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away."

— Antoine de Saint-Exupéry