In Free Thought and Official Propaganda, Bertrand Russell delivers a powerful and timeless defense of intellectual freedom, critical inquiry, and the moral responsibility to question authority. Based on a lecture given in 1922, this concise yet impactful work explores how governments, institutions, and the media often manipulate public opinion—not through censorship alone, but through the shaping of ideas and the suppression of dissent. Russell argues that true freedom of thought requires more than legal protections; it demands a cultural commitment to reason, skepticism, and open debate. He warns against the dangers of dogma—whether religious, political, or scientific—and urges individuals to resist the pressure to conform to official narratives. With clarity, wit, and unwavering logic, Free Thought and Official Propaganda remains strikingly relevant today, offering a compelling call to defend intellectual independence in the face of propaganda, misinformation, and ideological control.