He is not used to society; he wouldn't understand that certain things and ways were absolutely essential.

I suppose it isn't his fault exactly, but that doesn't help.
And how can we tell him ?" "I don't know that you can tell him, but you might hint.

Diplomacy, my dear, is one of the necessary elements of life.

Whatever else you do remember to be diplomatic.

My poor husband used to have a pet proverb--he was interested in politics, my dear, and some of his sayings were a trifle grotesque but very much to the point.