That's the title of Vanguard founder John Bogle's fantastic book about measuring what counts in life.
The title, as Bogle explains, comes from a conversation between Kurt Vonnegut and novelist Joseph Heller, who are enjoying a party hosted by a billionaire hedge fund manager. Vonnegut points out that their wealthy host had made more money in one day than Heller ever made from his novel Catch-22. Heller responds: "Yes, but I have something he will never have: enough."
The relevance of this quote is that it should not be confused for the sour grapes syndrome, but taken as a sure and overall better way out of the logic so many subscribe to, yet only for the benefit of the chosen few. Capitalism without virtues is worse than theft.