
Enjoy fast, free delivery, exclusive deals, and award-winning movies & TV shows with Prime
Try Prime
and start saving today with fast, free delivery
Amazon Prime includes:
Fast, FREE Delivery is available to Prime members. To join, select "Try Amazon Prime and start saving today with Fast, FREE Delivery" below the Add to Cart button.
Amazon Prime members enjoy:- Cardmembers earn 5% Back at Amazon.com with a Prime Credit Card.
- Unlimited Free Two-Day Delivery
- Streaming of thousands of movies and TV shows with limited ads on Prime Video.
- A Kindle book to borrow for free each month - with no due dates
- Listen to over 2 million songs and hundreds of playlists
- Unlimited photo storage with anywhere access
Important: Your credit card will NOT be charged when you start your free trial or if you cancel during the trial period. If you're happy with Amazon Prime, do nothing. At the end of the free trial, your membership will automatically upgrade to a monthly membership.
Buy new:
$24.84$24.84
Ships from: Amazon Sold by: Luxechant
Save with Used - Good
$8.93$8.93
Ships from: Amazon Sold by: Zoom Books Company

Download the free Kindle app and start reading Kindle books instantly on your smartphone, tablet, or computer - no Kindle device required.
Read instantly on your browser with Kindle for Web.
Using your mobile phone camera - scan the code below and download the Kindle app.
Follow the author
OK
The Moon Is a Harsh Mistress Paperback – June 15, 1997
Purchase options and add-ons
Robert A. Heinlein was the most influential science fiction writer of his era, an influence so large that, as Samuel R. Delany notes, "modern critics attempting to wrestle with that influence find themselves dealing with an object rather like the sky or an ocean." He won the Hugo Award for best novel four times, a record that still stands. The Moon is a Harsh Mistress was the last of these Hugo-winning novels, and it is widely considered his finest work.
It is a tale of revolution, of the rebellion of the former Lunar penal colony against the Lunar Authority that controls it from Earth. It is the tale of the disparate people--a computer technician, a vigorous young female agitator, and an elderly academic--who become the rebel movement's leaders. And it is the story of Mike, the supercomputer whose sentience is known only to this inner circle, and who for reasons of his own is committed to the revolution's ultimate success.
The Moon is a Harsh Mistress is one of the high points of modern science fiction, a novel bursting with politics, humanity, passion, innovative technical speculation, and a firm belief in the pursuit of human freedom.
The Moon is a Harsh Mistress is the winner of the 1967 Hugo Award for Best Novel.
- Print length384 pages
- LanguageEnglish
- PublisherOrb Books
- Publication dateJune 15, 1997
- Dimensions5.5 x 0.96 x 8.25 inches
- ISBN-100312863551
- ISBN-13978-0312863555
- Lexile measure900
Book recommendations, author interviews, editors' picks, and more. Read it now
Frequently bought together

Customers who viewed this item also viewed
- Must be a yearning deep in human heart to stop other people from doing as they please. Rules, laws—always for other fellow.Highlighted by 1,021 Kindle readers
- A managed democracy is a wonderful thing, Manuel, for the managers . . . and its greatest strength is a ‘free press’ when ‘free’ is defined as ‘responsible’ and the managers define what is ‘irresponsible.’Highlighted by 735 Kindle readers
- A rational anarchist believes that concepts such as ‘state’ and ‘society’ and ‘government’ have no existence save as physically exemplified in the acts of self-responsible individuals.Highlighted by 728 Kindle readers
- I wasn’t impressed. As it says in Bible, God fights on side of heaviest artillery.Highlighted by 423 Kindle readers
- “My point is that one person is responsible. Always. If H-bombs exist—and they do—some man controls them. In terms of morals there is no such thing as ‘state.’ Just men. Individuals. Each responsible for his own acts.”Highlighted by 330 Kindle readers
Editorial Reviews
Review
About the Author
Excerpt. © Reprinted by permission. All rights reserved.
ONE
That Dinkum Thinkum
I see in Lunaya Pravdathat Luna City Council has passed on first reading a bill to examine, license, inspect--and tax--public food vendors operating inside municipal pressure. I see also is to be mass meeting tonight to organize “Sons of Revolution” talk-talk.
My old man taught me two things: “Mind own business” and “Always cut cards.” Politics never tempted me. But on Monday 13 May 2075 I was in computer room of Lunar Authority Complex, visiting with computer boss Mike while other machines whispered among themselves. Mike was not official name; I had nicknamed him for Mycroft Holmes, in a story written by Dr. Watson before he founded IBM. This story character would just sit and think--and that’s what Mike did. Mike was a fair dinkum thinkum, sharpest computer you’ll ever meet.
Not fastest. At Bell Labs, Bueno Aires, down Earthside, they’ve got a thinkum a tenth his size which can answer almost before you ask. But matters whether you get answer in microsecond rather than millisecond as long as correct?
Not that Mike would necessarily give right answer; he wasn’t completely honest.
When Mike was installed in Luna, he was pure thinkum, a flexible logic--”High-Optional, Logical, Multi-Evaluating Supervisor, Mark IV, Mod. L”--a HOLMES FOUR. He computed ballistics for pilotless freighters and controlled their catapult. This kept him busy less than one percent of time and Luna Authority never believed in idle hands. They kept hooking hardware into him--decision-action boxes to let him boss other computers, bank on bank of additional memories, more banks of associational neural nets, another tubful of twelve-digit random numbers, a greatly augmented temporary memory. Human brain has around ten-to-the-tenth neurons. By third year Mike had better than one and a half times that number of neuristors.
And woke up.
Am not going to argue whether a machine can “really” be alive, “really” be self-aware. Is a virus self-aware? Nyet. How about oyster? I doubt it. A cat? Almost certainly. A human? Don’t know about you, tovarishch, but Iam. Somewhere along evolutionary chain from macromolecule to human brain self-awareness crept in. Psychologists assert it happens automatically whenever a brain acquires certain very high number of associational paths. Can’t see it matters whether paths are protein or platinum.
(“Soul?” Does a dog have a soul? How about cockroach?)
Remember Mike was designed, even before augmented, to answer questions tentatively on insufficient data like you do; that’s “high-optional” and “multi-evaluating” part of name. So Mike started with “free will” and acquired more as he was added to and as he learned--and don’t ask me to define “free will.” If comforts you to think of Mike as simply tossing random numbers in air and switching circuits to match, please do.
By then Mike had voder-vocoder circuits supplementing his read-outs, print-outs, and decision-action boxes, and could understand not only classic programming but also Loglan and English, and could accept other languages and was doing technical translating--and reading endlessly. But in giving him instructions was safer to use Loglan. If you spoke English, results might be whimsical; multi-valued nature of English gave option circuits too much leeway.
And Mike took on endless new jobs. In May 2075, besides controlling robot traffic and catapult and giving ballistic advice and/or control for manned ships, Mike controlled phone system for all Luna, same for Luna-Terra voice & video, handled air, water, temperature, humidity, and sewage for Luna City, Novy Leningrad, and several smaller warrens (not Hong Kong in Luna), did accounting and payrolls for Luna Authority, and, by lease, same for many firms and banks.
Some logics get nervous breakdowns. Overloaded phone system behaves like frightened child. Mike did not have upsets, acquired sense of humor instead. Low one. If he were a man, you wouldn’t dare stoop over. His idea of thigh-slapper would be to dump you out of bed--or put itch powder in pressure suit.
Not being equipped for that, Mike indulged in phony answers with skewed logic, or pranks like issuing pay cheque to a janitor in Authority’s Luna City office for AS-$10,000,000,000,000,185.15--last five digits being correct amount. Just a great big overgrown lovable kid who ought to be kicked.
He did that first week in May and I had to troubleshoot. I was a private contractor, not on Authority’s payroll. You see--or perhaps not; times have changed. Back in bad old days many a con served his time, then went on working for Authority in same job, happy to draw wages. But I was born free.
Makes difference. My one grandfather was shipped up from Joburg for armed violence and no work permit, other got transported for subversive activity after Wet Firecracker War. Maternal grandmother claimed she came up in bride ship--but I’ve seen records; she was Peace Corps enrollee (involuntary), which means what you think: juvenile delinquency female type. As she was in early clan marriage (Stone Gang) and shared six husbands with another woman, identity of maternal grandfather open to question. But was often so and I’m content with grandpappy she picked. Other grandmother was Tatar, born near Samarkand, sentenced to “re-education” on Oktyabrskaya Revolyutsiya, then “volunteered” to colonize in Luna.
My old man claimed we had even longer distinguished line--ancestress hanged in Salem for witchcraft, a g’g’g’great-grandfather broken on wheel for piracy, another ancestress in first shipload to Botany Bay.
Proud of my ancestry and while I did business with Warden, would never go on his payroll. Perhaps distinction seems trivial since I was Mike’s valet from day he was unpacked. But mattered to me. I could down tools and tell them go to hell.
Besides, private contractor paid more than civil service rating with Authority. Computermen scarce. How many Loonies could go Earthside and stay out of hospital long enough for computer school?--even if didn’t die.
I’ll name one. Me. Had been down twice, once three months, once four, and got schooling. But meant harsh training, exercising in centrifuge, wearing weights even in bed--then I took no chances on Terra, never hurried, never climbed stairs, nothing that could strain heart. Women--didn’t even thinkabout women; in that gravitational field it was no effort not to.
But most Loonies never tried to leave The Rock--too risky for any bloke who’d been in Luna more than weeks. Computermen sent up to install Mike were on short-term bonus contracts--get job done fast before irreversible physiological change marooned them four hundred thousand kilometers from home.
But despite two training tours I was not gung-ho computermen; higher maths are beyond me. Not really electronics engineer, nor physicist. May not have been best micromachinist in Luna and certainly wasn’t cybernetics psychologist.
But I knew more about all these than a specialist knows--I’m general specialist. Could relieve a cook and keep orders coming or field-repair your suit and get you back to airlock still breathing. Machines like me and I have something specialists don’t have: my left arm.
You see, from elbow down I don’t have one. So I have a dozen left arms, each specialized, plus one that feels and looks like flesh. With proper left arm (number-three) and stereo loupe spectacles I could make untramicrominiature repairs that would save unhooking something and sending it Earthside to factory--for number-three has micromanipulators as fine as those used by neurosurgeons.
So they sent for me to find out why Mike wanted to give away ten million billion Authority Scrip dollars, and fix it before Mike overpaid somebody a mere ten thousand.
I took it, time plus bonus, but did not go to circuitry where fault logically should be. Once inside and door locked I put down tools and sat down. “Hi, Mike.”
He winked lights at me. “Hello, Man.”
“What do you know?”
He hesitated. I know--machines don’t hesitate. But remember, Mike was designed to operate on incomplete data. Lately he had reprogrammed himself to put emphasis on words; his hesitations were dramatic. Maybe he spent pauses stirring random numbers to see how they matched his memories.
“’In the beginning,‘” Mike intoned, “’God created the heaven and the earth. And the earth was without form, and void; and darkness wasupon the face of the deep. And--’”
“Hold it!” I said. “Cancel. Run everything back to zero.” Should have known better than to ask wide-open question. He might read out entire Encyclopaedia Britannica. Backwards. Then go on with every book in Luna. Used to be he could read only microfilm, but late ‘74 he got a new scanning camera with suction-cup waldoes to handle paper and then he read everything.
“You asked what I knew.” His binary read-out lights rippled back and forth--a chuckle. Mike could laugh with voder, a horrible sound, but reserved that for something really funny, say a cosmic calamity.
“Should have said,“ I went on, “’What do you know that’s new?’ But don’t read out today’s papers; that was a friendly greeting, plus invitation to tell me anything you think would interest me. Otherwise null program.”
Mike mulled this. He was weirdest mixture of unsophisticated baby and wise old man. No instincts (well, don’t thinkhe could have had), no inborn traits, no human rearing, no experience in human sense--and more stored data than a platoon of geniuses.
“Jokes?” he asked.
...
Product details
- Publisher : Orb Books
- Publication date : June 15, 1997
- Edition : First Edition
- Language : English
- Print length : 384 pages
- ISBN-10 : 0312863551
- ISBN-13 : 978-0312863555
- Item Weight : 15.2 ounces
- Dimensions : 5.5 x 0.96 x 8.25 inches
- Lexile measure : 900
- Best Sellers Rank: #605,786 in Books (See Top 100 in Books)
- #768 in Science Fiction (Books)
- #1,026 in Epic Fantasy (Books)
- Customer Reviews:
About the author

Robert Heinlein was an American novelist and the grand master of science fiction in the twentieth century. Often called 'the dean of science fiction writers', he is one of the most popular, influential and controversial authors of 'hard science fiction'.
Over the course of his long career he won numerous awards and wrote 32 novels, 59 short stories and 16 collections, many of which have cemented their place in history as science fiction classics, including STARSHIP TROOPERS, THE MOON IS A HARSH MISTRESS and the beloved STRANGER IN A STRANGE LAND.
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers consider this science fiction novel one of Heinlein's best works, praising its compelling story that runs the gamut of hope and its thought-provoking exploration of politics and revolution. The book features rich characters, with one review noting how the narrative shifts between multiple voices, and customers find it entertaining with plenty of action to keep them engaged. While the writing style receives mixed reactions, with some finding it eloquent while others describe it as rough, the pacing also divides opinions between those who find it well-paced and those who consider it too slow.
AI-generated from the text of customer reviews
Customers find the book highly readable, with many considering it one of Heinlein's best works and among their favorite books of all time.
"The Moon is a Harsh Mistress is a fantastic book, one that I read with regularity because there's always something new to check out, to understand..." Read more
"Classic book, amazing read, full of great fun and ideas which are important food for thought...." Read more
"...This reversal of roles is a literary device that keeps the reader questioning their assumptions about labels versus the genuine truths those labels..." Read more
"Great Heinlein book." Read more
Customers praise the compelling narrative of this science fiction novel, describing it as a great work of revolutionary fiction with a fantastic story of revolution.
"...One of the most brilliant strokes of genius is how through this providential meeting the reader learns that Luna is a libertarian society with no..." Read more
"...masterfully weaves his engaging storytelling into a well crafted science fiction world that prophetically envisions the future in a believable way...." Read more
"...The Moon is a Harsh Mistress has a very definite world-view and political philosophy, some of which I agreed with, and some of which I really,..." Read more
"...But the writing is preserved. One of the finest expositions on how to win a revolution, even if you don't have a self-aware computer...." Read more
Customers find the book thought-provoking, particularly appreciating its political and revolutionary themes, with one customer noting its matured Libertarian philosophy.
"...a great, character-driven story that, as is so often the case, loaded with sociology - in this case, with men outnumbering women by around three-to-..." Read more
"...It's a deep, intelligent examination of the possibilities of Artificial Intelligence...written in 1966!..." Read more
"...All in all, this is a novel about politics -- a very complex, deep, intellectual and sophisticated look at politics, government, revolution and war...." Read more
"...And full of Heinlein's comments on libertarianism. Fun, entertaining, thought provoking, and still educational in the real 21st century...." Read more
Customers appreciate the character development in the book, with one review noting how the story is told through voice changes for multiple characters, and another highlighting the believable AI hero.
"...Enough of this story. This is a great, character-driven story that, as is so often the case, loaded with sociology - in this case, with men..." Read more
"...He starts with a kaleidoscope of colorful characters, posits a world no one living has ever experienced, then uses science to bring them together..." Read more
"...I Love every book he wrote, I Love his characters, his plots, his sense of optimism for humanity, all of it...." Read more
"The story line was imaginative and I became personally involved with the main characters. However, the graphic violence was a bit much." Read more
Customers find the book entertaining and exciting, with action that keeps them engaged throughout, making it a nice go-to adventure.
"Classic book, amazing read, full of great fun and ideas which are important food for thought...." Read more
"...And full of Heinlein's comments on libertarianism. Fun, entertaining, thought provoking, and still educational in the real 21st century...." Read more
"...vibe of the 60s and a few weird relationship things but definitely a fun, fast read." Read more
"...to wade through but lots of great action as well and a fun taste of orbital mechanics. In military terms, the Moon has the high ground!" Read more
Customers appreciate the book's timeless story and view of the past, with one customer noting how it captures an event from world history.
"Classic book, amazing read, full of great fun and ideas which are important food for thought...." Read more
"I was very excited to find this classic work from Robert A. Heinlein in a clean hardback edition...." Read more
"Somewhat dated." Read more
"Great view of future life on the moon if it starts as a penal colony the way Australia did for England...." Read more
Customers have mixed opinions about the language of the book, with some praising its eloquent and quirky style, while others find it unreadable and note that the narrator's broken English becomes annoying.
"...of sentences were simply left out..everywhere ..and made it hard to read at times. It was like reading broken english...." Read more
"...Robert A. Heinlein, on the other hand, is one of the most brilliant writers the United States of America has ever produced...." Read more
"...at first -- I couldn't figure out what was going on or why the language was so rough and unpolished and choppy...." Read more
"...well bound (I suspect it will last), and the print is clear and easy to read...." Read more
Customers have mixed opinions about the pacing of the book, with some finding it well-paced and timely, while others consider it too slow.
"...Way ahead of it's time and a "primer" for the background of "The Cat Who Walked Through Walls". Luna Revolution, Adam Selene, the works...." Read more
"...The writing was just ok. The action felt slow until the last 1/3, and just the overall sequence of events felt too "easy"...." Read more
"...of the 60s and a few weird relationship things but definitely a fun, fast read." Read more
"...much time spent on Mannie’s family instead of the Revolution, too slow in parts and way too fast in others...." Read more
Reviews with images

Great read
Top reviews from the United States
There was a problem filtering reviews. Please reload the page.
- Reviewed in the United States on March 12, 2025The Moon is a Harsh Mistress is a fantastic book, one that I read with regularity because there's always something new to check out, to understand or to appreciate. Heinlein has written several novels around the SF theme of a future society where a few brave patriots fight massive oppression - always something akin to the American Revolution in 1776-83. This book is the best of the lot. It's also Heinlein's fourth and final Hugo Award for the best SF novel of the year.
Told in first person by a computer technician in (not on) the Moon, "Manny" discovers that the master computer in the Moon is also now sentient, having so many lesser computers attached that it had enough circuits to parallel the human brain. Mycroft "Mike" Holmes (the Computer) is a big fun-loving kid, whose biggest issue is boredom, and his heart's passion, telling jokes that are funny, and differentiating between "funny once" and "funny always." Manny becomes his first and best friend.
Then, a small riot breaks out in Luna City, one of the largest human habitats in the Moon, and a member of Manny's extended family gets involved, and suddenly, Manny and two compatriots - Bernardo de la Paz and Wyoming Knott (who hates the nickname "Wy Knott" - "funny once" joke, as Mike comes to understand it - become involved in a revolution against the oppressive "Lunar Authority" which sees all of the Moon's denizens as indentured servants 9i.e., slaves). But there's a problem. Because most of the water ice found and mined on the Moon is used to grow wheat for the chronically food-short humans on Earth - mostly in India, though this is all but irrelevant. The Lunar Authority doesn't believe this, and keeps demanding higher quotas of grain. In six years, the water resources in the Moon will be gone, and within eight years, the surviving humans will resort to cannibalism.
Enough of this story. This is a great, character-driven story that, as is so often the case, loaded with sociology - in this case, with men outnumbering women by around three-to-one, how does society evolve? In Manny's case, he's in a "line marriage" that dates back generations and includes an eclectic assortment of hard-rock miners, beauticians, farmers and a minister for an outlandish offshoot of Christianity.
If you love hard SF with a soul, and haven't read The Moon is a Harsh Mistress, what are you waiting for?
- Reviewed in the United States on April 19, 2025Classic book, amazing read, full of great fun and ideas which are important food for thought. It's a deep, intelligent examination of the possibilities of Artificial Intelligence...written in 1966! Astonishing how relevant this book is today, in many different ways.
Robert A. Heinlein is arguably one of the most influential writers of the 20th Century. He has been criticized quite a lot in recent years, but the various objections to his writing say much more about the critics than about Heinlein. Personally, I do not agree with everything he writes, but I always take him seriously and even when I object, his thinking usually turns out to be helpful.
- Reviewed in the United States on June 11, 2020Later in the current century, the moon will be used by Earth as a penal colony. Luna will serve Earth as Australia once served Great Britain. The Loonies, as they proudly call themselves, discover an existential threat to themselves and the unique society that has grown up on the Moon. Earth forces the loonies, some now into their third generation as colonists, to sell grain to Earth at below-market prices. Loonies don't much like this but it gets serious when they discover that the fossil water traces impeded in the rocks of the Moon will run out in a few years. No more water, no more trade, no more Loonies.
So they revolt.
Heinlein makes use of the tech that we now use for super fast trains to catapult grain barges to Earth, a first in popular literature as far as I know. He also supposes a kind of truck called a 'rolligon'. Rolligons were and are used in the Arctic as transports. The huge beer can shaped wheels present a very low footprint. This is important in preserving the fragile tundra of the far north. A similar problem exists on the Moon with moondust. The rolligon just glides over tundra or moondust. Again, so far as I know this is the first fictional use of a rolligon on the moon. He also supposes a self-aware computer years before either HAL or EARTH NET.
The social suppositions in Heinlein's work always interest us. Here he gives us a 'line marriage' in which new husbands or wives are added from time to time.
"The Moon is a Harsh Mistress" holds up pretty well.
- Reviewed in the United States on May 17, 2025Great book! I wonder how many revolutions it’s inspired?
Only problem was many of the pages were stuck together at the bottom. Easily resolved but would tear the bottom of the page when separating.
Great book! I wonder how many revolutions it’s inspired?
Only problem was many of the pages were stuck together at the bottom. Easily resolved but would tear the bottom of the page when separating.
Images in this review
Top reviews from other countries
- FABIO VAZQUEZReviewed in Brazil on January 25, 2023
5.0 out of 5 stars masterpiece
from the sepia lightweight paper to the beautiful cover
-
marbleReviewed in Japan on March 22, 2025
5.0 out of 5 stars 良い商品が届きました。有難うございます
良い商品が届きました。有難うございます
- SurajitReviewed in India on October 23, 2017
5.0 out of 5 stars Awe Inspiring...The future is here
In depth articulation of a colony going independent. Inspiring and at the same time breath taking especially in the details of a Wild West society governed by an Artifical Intelligence engine.
- Kelly CoccimilloReviewed in Canada on May 15, 2024
5.0 out of 5 stars Amazing
For its age, the book reads well and does not feel as dated as it should. It is an awesome story. I was just disappointed that he killed off the computer.
- cdReviewed in the United Kingdom on April 11, 2025
5.0 out of 5 stars Great classic book
Great classic sci-fi. Arrived quickly and well packed.