Big 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 OgilvyThere are very few men of genius in advertising agencies. But we need all we can find. Almost without exception they are disagreeable. Don't destroy them. They lay golden eggs.
David Ogilvy