Experience has taught me that advertisers get the best results when they pay their agency a flat fee. It is unrealistic to expect your agency to be impartial when its vested interest lies wholly in the direction of increasing your commissionable advertising.
David OgilvyPeople don't buy a new detergent because the manufacturer told a joke on television last night.
David OgilvyThe more informative your advertising, the more persuasive it will be. Before people making a buying decision, they have many questions. For example, why they should buy from you, why your product is better than other similar products, why they should trust you, and why they should buy it now, etc.
David OgilvyThe worst fault a salesman can commit is to be a bore...... Pretend to be vastly interested in any subject the prospects shows an interest in.
David Ogilvy