But the possibility that a new idea will lead to a better way of living is at least as likely. When people are used to considering many ideas, they learn to judge their value. When they must make up their own minds, people learn not only what they believe but also why they believe it. Once the government tells them which ideas are acceptable, they do not need to judge an idea or learn the reasoning that makes it valid. They simply follow, and the evolution of thought stops.
Freedom requires people to make personal judgments.
And that remains the best way to keep all our ideas strong.