I don't know the rules of grammar... If you're trying to persuade people to do something, or buy something, it seems to me you should use their language, the language they use every day, the language in which they think. We try to write in the vernacular.
David OgilvyOur offices must always be headed by the kind of men who command respect. Not phonies, zeros or bastards.
David OgilvyI do not regard advertising as entertainment or an art form, but as a medium of information. When I write an advertisement, I donโt want you to tell me that you find it โcreative.โ I want you to find it so interesting that you buy the product.
David Ogilvy