"Good manners come, as we say, from good breeding or rather are good breeding; and breeding is acquired by habitual action, in response to habitual stimuli, not by conveying information."

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Not everyone knows how to be silent or to leave in good time. It happens that even people of good breeding fail to notice that their presence provokes in the weary or preoccupied host a feeling akin to hatred, and that this feeling is tensely concealed and covered up with lies.

— Anton Chekhov