Probably:
"Golf is a good walk spoiled."
Mark Twain
and Winston Churchill's acerbic wit:
Bessie Braddock: “Sir, you are drunk.”
Churchill: “Madam, you are ugly. In the morning, I shall be sober.”
Nancy Astor: “Sir, if you were my husband, I would give you poison.”
Churchill: “If I were your husband I would take it.”
and in reference to Clement Atlee:
"A sheep in sheep’s clothing."
"A modest man, who has much to be modest about."
and from the archbitch himself:
"Fashion is a form of ugliness so intolerable that we have to alter it every six months."
"America had often been discovered before Columbus, but it had always been hushed up."
"To get back my youth I would do anything in the world, except take exercise, get up early, or be respectable."