So I mean the kind of speech that you see someone giving in an old movie where they clear their throat, and they go, "Ahem, ladies and gentlemen," and then they speak in a certain way which has nothing to do with casual speech. It's formal. It uses long sentences like this Gibbon one.
La clase de discurso de las películas antiguas donde se aclaran la garganta y comienzan: "Ejem, señoras y señores" y entonces hablan totalmente diferente al habla informal. Es formal. Utilizan oraciones largas como esta de Gibbon.