Nobody ever arrives at a very big idea through a conscious, rational thought process. It comes from your unconscious.
David OgilvyManaging an advertising agency isn't all beer and skittles. After fourteen years of it, I have come to the conclusion that the top man has one principle responsibility: to provide an atmosphere in which creative mavericks can do useful work.
David OgilvyGreat hospitals do two things. They look after patients, and they teach young doctors. We look after clients, and we teach young advertising people.
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