"All animals are equal, but some animals are more equal than others." This phrase by George Orwell from Animal Farm has gone down in history and in the common consciousness of many different peoples, from different cultures, speaking to the hearts of all thinking individuals who know how to appreciate the goods of parliamentary democracy.
Who says it? The pigs of the farm, who, after the revolution against the human-masters and their overthrow, do not establish equality among the animals, which was the original goal of the revolution, but a totalitarian regime under the absolute power of the pig named "Napoleon".
An allegorical novella, written in 1945 (just three years before the "sister" work, 1984), Animal Farm is inspired by the events and consequences of the Russian Revolution of 1917: how the vision for a society of equal citizens gradually transformed into a nightmarish, authoritarian regime that imprisoned and exterminated dissenters.
Orwell's polemic against Stalinism (mainly stemming from his experiences in the Spanish Civil War) finds its culmination here, and before 1984.