Viewers have a way of remembering the celebrity while forgetting the product. I did not know this when I paid Eleanor Roosevelt $35,000 to make a commercial for margarine. She reported that her mail was equally divided. "One half was sad because I had damaged my reputation. The other half was happy because I had damaged my reputation." Not one of my proudest memories.
David OgilvyA good advertisement is one which sells the product without drawing attention to itself.
David OgilvyBig ideas come from the unconscious. This is true in art, in science, and in advertising. But your unconscious has to be well informed, or your idea will be irrelevant. Stuff your conscious mind with information, then unhook your rational thought process. You can help this process by going for a long walk, or taking a hot bath, or drinking half a pint of claret. Suddenly, if the telephone line from your unconscious is open, a big idea wells up within you.
David Ogilvy