Crossword puzzle clue "good enough to sell"

Good enough to sell

Shakespeare character who says "Good night, ladies; good night, sweet ladies; good night, good night"

"A good newspaper is never nearly good enough but a lousy newspaper is a ___ forever" (Garrison Keillor)

Whom "feeling good was good enough for," in a 1971 #1 song

"Enough is enough!"

Shout "Enough is enough!"

"Enough is enough!"

"Enough is enough!"