Do not address your readers as though they were gathered together in a stadium. When people read your copy, they are alone. Pretend you are writing to each of them a letter on behalf of your client.
David OgilvyMany manufacturers secretly question whether advertising really sells their product, but are vaguely afraid that their competitors might steal a march on them if they stopped.
David OgilvyIf you tell lies about a product, you will be found out - either by the Government, which will prosecute you, or by the consumer, who will punish you by not buying your product a second time.
David Ogilvy