“She is a positive terror to hostesses and servants. She is always turning from what has been offered her to say with a demure little sigh and a smile ‘Oh please, please…all I want is a cup of tea, weak but not too weak, and the teeniest weeniest bit of really crisp toast.’ You see? Because what she wants is smaller and less costly than what has been set before her, she never recognises as gluttony her determination to get what she wants, however troublesome it may be to others. At the very moment of indulging her appetite she believes that she is practising temperance. In a crowded restaurant she gives a little scream at the plate which some overworked waitress has set before her and says, ‘Oh, that’s far, far too much! Take it away and bring me about a quarter of it.’ If challenged, she would say she was doing this to avoid waste; in reality she does it because the particular shade of delicacy to which we have enslaved her is offended by the sight of more food than she happens to want.”
C.S. Lewis, The Screwtape Letters