"Or to take another obvious instance: the jokes about a mother-in-law are scarcely delicate, but the problem of a mother-in-law is extremely delicate. A mother-in-law is subtle because she is a thing like the twilight. She is a mystical blend of two inconsistent things—law and a mother. The caricatures misrepresent her; but they arise out of a real human enigma. "Comic Cuts" deals with the difficulty wrongly, but it would need George Meredith at his best to deal with the difficulty rightly. The nearest statement of the problem perhaps is this: it is not that a mother-in-law must be nasty, but that she must be very nice."
January 1, 1970
https://en.wikiquote.org/wiki/What's_Wrong_with_the_World