The Moon is a Harsh Mistress is a political/sci-fi masterpiece. The book tells the story of Lunar (used to exile criminals and their families, once you adapt to life on the moon it was almost impossible to adjust back to the gravity of earth) and their struggle to become a free nation. Lunar while a place of criminals, political exiles or their descendants is like any other countries; yearning for liberty and to be free from the tyranny of their slaves. With the help of a supercomputer with a personality; Mycroft, The Moon is a Harsh Mistress is a well-paced, action charged, science fiction must-read. Without giving much away this book has a strong political message but done in such a way that the story and climax is never effected.