Source, in full
Actually spoken by 1950s UCLA football coach Henry Russell "Red" Sanders. Lombardi always denied he had said this although it is close to something he did say: "Winning isn't a sometime thing; it's an all the time thing."
More quotes by Vince Lombardi
We shall play every game to the hilt with every ounce of fiber we have in our bodies.
If you aren't fired with enthusiasm, you will be fired with enthusiasm.
Attribution
Quote text and notes from Wikiquote: Vince Lombardi (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.