How does Squealer manipulate the animals so the pigs can better control them?

A persuasive speaker, Squealer uses language to make the other animals disbelieve what they have seen with their own eyes and to believe the lies he tells them. Sometimes Squealer encourages the animals to question their own recollections, such as when Napoleon violates the prohibition against trade: “Is it written down anywhere?” Squealer asks, causing the animals to be certain they are mistaken. Squealer explains why actions that appear to benefit the pigs actually help all the animals. When the pigs move into the farmhouse despite an earlier ban, he declares, “It was absolutely necessary . . . that the pigs, who were the brains of the farm, should have a quiet place to work in.” Squealer’s disingenuous and manipulative speech succeeds in making the animals distrust their own experiences.