Never write an advertisement which you wouldn't want your own family to read. You wouldn't tell lies to your own wife. Don't tell them to mine. Do as you would be done by.
David OgilvyRemove advertising, disable a person or firm from proclaiming its wares and their merits, and the whole of society and of the economy is transformed. The enemies of advertising are the enemies of freedom.
David OgilvyI know of a brewer who sells more of his beer to the people who never see his advertising than to the people who see it every week. Bad advertising can unsell a product.
David OgilvyA consumer is not a moron. She's your wife. Don't insult her intelligence, and don't shock her.
David Ogilvy