Publicity images often use sculptures or paintings to lend allure or authority to their own message. Framed oil paintings often hang in shop windows as part of their display. Any work of art 'quoted' by publicity serves two purposes. Art is a sign of affluence; it belongs to the good life; it is part of the furnishing which the world gives to the rich and the beautiful. But a work of art also suggests a cultural authority, a form of dignity, even of wisdom, which is superior to any vulgar material interest; an oil painting belongs to the cultural heritage; it is a reminder of what it means to be a cultivated European. And so the quoted work of art (and this is why it is so useful to publicity) says two almost contradictory things at the same time: it denotes wealth and spirituality: it implies that the purchase being proposed is both a luxury and a cultural value. Publicity has in fact understood the tradition of the oil painting more thoroughly than most art historians. It has grasped the implications of the relationship between the work of art and its spectator-owner and with these it tries to persuade and flatter the spectator-buyer. The continuity, however, between oil painting and publicity goes far deeper than the 'quoting' of specific paintings. Publicity relies to a very large extent on the language of oil painting. It speaks in the same voice about the same things. (P. 129)