The main theme of "1984" by George Orwell is the dangers of totalitarianism, emphasizing the oppressive nature of a government that seeks absolute power over individuals. The novel explores the impact of surveillance, censorship, and manipulation on society, illustrating how language can be altered to control thought and maintain power. The dystopian world presented demonstrates the consequences of unchecked authority, challenging readers to consider the importance of truth, freedom, and individuality. Through its portrayal of a bleak future, Orwell warns against complacency regarding personal freedoms and the potential for government overreach and propaganda.