You've got to be lucky to pitch a no-hitter, and if you have good stuff, it's easier to be lucky.
Source, in full
Speaking on July 1, 1990, at Chavez Ravine, in reference to a no-hitter thrown there just two days before by the Dodgers' Fernando Valuenzela (and, coincidentally, just hours before the Yankees' Andy Hawkins would, thanks to three 8th-inning Bomber miscues, famously record a 4-0, complete-game loss to Chicago, despite giving up no hits ); as quoted in "Notes on a Scorecard" by Allan Malamud, in The Los Angeles Times (July 2, 1990)