Crossword puzzle clue "who said only dull people are brilliant at breakfast"

Who said "Only dull people are brilliant at breakfast"

Dull, dull, dull

It's said that he said, "I never said most of the things I said"

Dull-colored, or just plain dull

"Baseball, it is said, is only a game. True. And the Grand Canyon is only a hole in ___." (George Will)

Sobriquet for the woman who said "Only the little people pay taxes"

Nickname of the dictator who said "I know the Haitian people because I am the Haitian people"

It's dull, it's said