As quoted in "Wilson vs Watson: The blessing of great enemies" by Amanda Gefter in New Scientist (10 September 2009); this is a play upon the famous statement by Isaac Newton: "If I have seen further it is only by standing on the shoulders of giants."
More quotes by Murray Gell-Mann
You don't need something more to get something more. That's what emergence means.
The most important prediction of a typical unified Yang–Mills theory is that of proton decay.
In our science, no amount of eloquence will save a wrong theory.
Attribution
Quote text and notes from Wikiquote: Murray Gell-Mann (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.