The quote from animal farm is “four legs good, two legs
bad.” This expression, which happens in Chapter III, establishes Snowball’s
compression of the Seven Commandments of Animalism, which themselves function
as condensations of Old major’s inspiring speech on the need for animal harmony
in the face of human domination. The phrase requests one of the novel’s many
moments of propagandizing, which Orwell depicts as one instance of how the top
class misuses language to govern the minor classes.