The main theme of the story centers around control of the media by the State, censorship of books and ultimately, of dictatorship. While the society described in the story is, of course, an extreme one, Bradbury very carefully illustrates that Montag's world got to that drastic point one stifled idea, one burned book at a time, and that this is something to be carefully guarded against in real life societies.
The most important themes in this novel revolve around censorship and mind control -- if the government can censor the people by telling them that they can not read, telling them what they can and can not do, and instilling certain "values" then they will have absolute power. The entire novel revolves around this. Each of the three sections of the novel develops the dangers of censorship and mind control as Montag learns who he is through the help of Clarisse, Faber, and Granger. Each of these characters shows the reader just how dangerous censhorship has become in their society and how the only people who do survive are those who fight against the system and are strong enough to reign supreme in the end.
The major theme of the book would be the dangers of censorship. If the government is censoring knowledge, ignorance would be possessed by the majority. When ignorance is possessed, a society would be eventually controlled. The people will not know how to stand up or think for themselves because they do not acquire any knowledge. Therefore, censorship is the root of the problems. By censoring what you can do and what you cannot do, it means that the government is taking control over you; they are applying rules and values that will eventually brainwash you. In the end, this will result in absolute power for them. In the novel, the government censored books in order to prevent knowledge and to keep the citizens in order. By distracting their citizens with fast cars, loud music, and advertisements, the government used methods to have the people slowly lose interest in books. At last, books were completely forgotten, and all the people revolved around technology. Montag learned who he was through the help of Clarisse, Faber and Granger; these characters all show us the danger censorship has become in their society.
The main theme of Fahrenheit 451 is the theme of censorship and how far it could be taken. Throughout the novel, the government disallows the reading of books (an example of censorship) in order to keep their citizens in order. This government citizenship is not only ridiculously extreme but it is also tyrannical. The book is written to show what the government can possibly do if given too much power. The issue of censorship is counteracted by an underground society of people who choose to memorize books in order to keep these books alive. Ray Bradbury does a great job of demonstrating the potential dangers of both censorship and government alike.