Who wrote the famous line "All animals are equal, but some animals are more equal than others"?

The line "All animals are equal, but some animals are more equal than others" originates from George Orwell's novella "Animal Farm," published in 1945. This work is an allegorical tale that critiques totalitarian regimes and reflects on the nature of power and equality. Orwell uses this line to illustrate the concept of social inequality and the hypocrisy that can arise in societal structures, emphasizing how those in power can manipulate language and ideology to maintain their dominance.

The other authors listed are known for different themes and styles. F. Scott Fitzgerald is celebrated for his exploration of the American Dream, particularly in "The Great Gatsby." John Steinbeck is renowned for his depictions of social issues, often focusing on the struggles of the working class in novels like "Of Mice and Men." Ernest Hemingway, known for his terse prose and themes of stoicism and loss in works such as "A Farewell to Arms," does not address the political themes found in Orwell's writing. Therefore, Orwell is the correct choice as he directly authored the line in question.