# The Moon Is a Harsh Mistress

![Book cover of The Moon Is a Harsh Mistress](/books/covers/the_moon_is_a_harsh_mistress.jpg)

by [Robert A. Heinlein](/books/authors/robert_a_heinlein/)
Awards: [Hugo](/books/by-award/#hugo-award), [Prometheus Hall Of Fame](/books/by-award/#prometheus-hall-of-fame-award)
★★★☆☆

## Review

_The Moon Is a Harsh Mistress_, by Robert A. Heinlein,
is a Hugo Award-winning classic of libertarian science fiction. It chronicles
the revolt of a lunar penal colony against its terrestrial rulers, a
revolution orchestrated by a small group of rebels and their self-aware
computer.

I first read _The Moon Is a Harsh Mistress_ about 20 years ago and I loved it. A bunch of
plucky rebels, having been pushed around by Earth for too long and with their
backs against the wall, decide to declare independence and start dropping
rocks down the gravity well until they get their way. And they have a sentient
computer backing them up! It wasn't my first time reading Heinlein---that was _Starship Troopers_ and _Stranger in a Strange Land_---but it
became my favorite. I even went out and bought a hardcover copy to display on
my shelf after finishing the paperback. The only other books I've done that
for were [Clarke](/books/authors/arthur_c_clarke/)'s _2001: A Space Odyssey_, Tolkien's _The Lord of the Rings_, and Moore and Gibbons's _Watchmen_. I didn't like _The Moon Is a Harsh Mistress_ as much this read-through.

The story is still engaging, but the long libertarian digressions are much
harder to tolerate now. Maybe I was more libertarian-curious in my younger
days, or maybe 20 more years of experience has made it clearer how selfish the
ideology is. Or maybe the rise of greedy fascism in the modern political
climate has soured me on the whole idea. Whatever the reason, I now prefer
stories that celebrate community over individualism, like [Wells](/books/authors/martha_wells/)'s [_Exit Strategy_](/books/exit_strategy/), to libertarian apologia in the vein of
Smith's _The Probability Broach_ or Rand's _The Fountainhead_ and _Atlas Shrugged_.[^orcs]

[^orcs]:
    It's clear from the above paragraphs which side of [John
    Rogers's][orcs] line I fall on:

    > There are two novels that can change a bookish fourteen-year old's life:
    > _The Lord of the Rings_ and _Atlas Shrugged_. One is a childish fantasy that often
    > engenders a lifelong obsession with its unbelievable heroes, leading to
    > an emotionally stunted, socially crippled adulthood, unable to deal with
    > the real world. The other, of course, involves orcs.

[orcs]: https://kfmonkey.blogspot.com/2009/03/ephemera-2009-7.html

For all its lecturing, _The Moon Is a Harsh Mistress_ does show some of libertarianism's
warts: lynch mobs, lack of vaccinations killing thousands, the hypocrisy of
the "self-reliant" relying on theft from each other. Taxes are theft, but
theft is fine, apparently.

The best character is Mycroft "Mike" HOLMES IV,[^holmes] the sentient computer
named after Sherlock's brother from Doyle's _The Adventure of the Greek Interpreter_. In some ways, he's a standard sci-fi AI: logical, good with numbers, able
to compute probabilities from limited information. But he also behaves like
today's generative AIs: he writes jokes and poems, tries to understand humor,
and generates real-time video of his "Adam Selene" persona. Mike raises the
classic question of machine consciousness, a theme explored in works like [Wells](/books/authors/martha_wells/)'s [_The Murderbot Diaries_](/books/series/the_murderbot_diaries/) and [Watts](/books/authors/peter_watts/)'s [_Blindsight_](/books/blindsight/) and [_Echopraxia_](/books/echopraxia/), that has become very real with the rise of
LLMs. Mike is also the ultimate free lunch, able to oversee the revolution and
paid only in companionship and jokes.

[^holmes]: Highly Optional, Logical, Multi-Evaluating Supervisor, Mark IV

The pidgin Mannie speaks mostly reads like the mixed English--Chinese from _Firefly_, but occasionally the slang sounds off, almost a "codder-shiggy"
problem as in [_Stand on Zanzibar_](/books/stand_on_zanzibar/). Also like [_Stand on Zanzibar_](/books/stand_on_zanzibar/), _The Moon Is a Harsh Mistress_ deals
with overpopulation and environmental collapse, themes that resonated in the
late '60s and were exemplified in Paul and Anne Ehrlich's _The Population Bomb_. _The Moon Is a Harsh Mistress_ tells a revolution story much like [Williams](/books/authors/walter_jon_williams/)'s [_Metropolitan_](/books/metropolitan/), but unlike [_City on Fire_](/books/city_on_fire/), it
doesn't really explore the aftermath. There's a quick reference to the
professor reading Keats, almost certainly _Hyperion_.
Its theme of a new order overthrowing the old fits perfectly here, just as it
did in [Simmons](/books/authors/dan_simmons/)'s [_Hyperion_](/books/hyperion/).

_The Moon Is a Harsh Mistress_ wasn't as great as I remembered, which makes me both excited
and a little nervous to revisit _Starship Troopers_---which I loved---and _Stranger in a Strange Land_---which I hated. I still plan to get back to the [_Hyperion Cantos_](/books/series/hyperion_cantos/) with
[_The Fall of Hyperion_](/books/the_fall_of_hyperion/) and the [_Bolo_](/books/series/bolo/) series with _Old Guard_, but
for now, I'm keeping my break from those going with [_On Basilisk Station_](/books/on_basilisk_station/), maybe _World Breakers_ and _Snow Crash_. And of course, I've got to fit in our
next book club pick, [_This Is How You Lose the Time War_](/books/this_is_how_you_lose_the_time_war/), too. Hopefully, I'll get plenty of time to
read over the holidays.

## Reviews that mention _The Moon Is a Harsh Mistress_
- [_All Systems Red_](/books/all_systems_red/)
- [_The Honor of the Queen_](/books/the_honor_of_the_queen/)
- [_Last Stand_](/books/last_stand/)
- [_Red Rising_](/books/red_rising/)
- [_The Rise of Endymion_](/books/the_rise_of_endymion/)

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