Boxer, the ever self-sacrificing true believer in Animal Farm, decides after Napoleon cancels the Sunday debates that if Comrade Napoleon says something, it must be right. He shortens this into a new maxim:
Napoleon is always right.
This shows the way that, even in the best of people (or in this case animals), relying on an absolute and unthinking slogan can allow tyranny to flourish. Obviously, nobody is always right. Boxer adopts his maxim, however, so that he can cope psychologically with the troubling transformations that are creeping into Animal Farm. His unthinking obedience is dangerous as it enables Napoleon and the pigs to increasingly exploit the rest of the animals. Boxer is a leader, much respected by the other animals for his loyalty, goodness, faith in the revolution, and capacity for hard work. Had he stood up to Napoleon, other animals would have been encouraged by his lead, and Napoleon might have had to stand down or at least would have been slowed down. Orwell's message is that the true believers in a revolution have a responsibility not to blind themselves to reality by refusing to think.