1. Your meaning is not clear. Are you using this meaning of "establishment": "(often initial capital letter) the existing power structure in society; the dominant groups in society and their customs or institutions; institutional authority (usually preceded by the): The Establishment believes exploring outer space is worth any tax money spent." (dictionary.com). If yes, you might rephrase to "the world belongs to the Establishment". These days, people often use "the elite" or "the elites" -- for example, "The world is controlled by powerful elite groups. 2. I prefer "about literature" as it is less direct, which seems appropriate. In a reading group, we learn about literature; it is not taught directly.