The best ideas come as jokes. Make your thinking as funny as possible. - David Ogilvy

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.

If each of us hires people who are smaller than we are, we shall become a company of dwarfs, but if each of us hires people who are bigger than we are, Ogilvy & Mather will become a company of giants.

When copywriters argue with me about some esoteric word they want to use, I say to them, ‘Get on a bus. Go to Iowa. Stay on a farm for a week and talk to the farmer. Come back to New York by train and talk to your fellow passengers in the day-coach. If you still want to use the word, go ahead.