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• If at first you don't succeed, try, try, try again.
  Then quit. There's no point in being a damn fool about it. -- W.C. Field...
• If at first you don't succeed, try, try again. Then quit.
  No use being a damn fool about it. -- W.C. Fields [Also attributed to Roy Mengot. Ed.]...
• If at first you don't succeed, try try again. Then quit. No use being a damn fool about it.
• If at first you don't succeed, give up, no use being a damn fool.
• If at first you don't succeed, try, try agai
• You can't cheat an honest man, never give a sucker an even break or smarten up a chump.
  -- W. C. Field...
• If at first you don't succeed, try, try again. -- W.E. Hickso
• If at first you don't succeed, give up.