Terry Pratchett (and Neil Gaiman afterwards) seems to have popularized the idea of gods as supernatural beings that require belief in them to exist. But is this idea truly original to him? Or are there earlier literary examples of this?

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    This trope is also known as Gods Need Prayer Badly. Commented Apr 7, 2011 at 16:38
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    I seem to recall the original Dungeons & Dragons (1974) rules also incorporated this idea, but I don't have access to them to check. Commented Feb 5, 2012 at 0:57
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    One of the earliest works of fiction, the Epic of Gilgamesh, plays with this idea. After humanity is drowned, the gods are starved for sacrifices and begin to whither away. So the idea is pretty much as old as fictional writing is.
    – Wad Cheber
    Commented May 31, 2016 at 9:07
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    @WadCheber that could be a good answer. I would upvote it if you would elaborete it further.
    – Marvel Boy
    Commented May 31, 2016 at 15:02
  • @WadCheber That's definitely older than anything else here.
    – DCShannon
    Commented Jul 23, 2016 at 0:58

7 Answers 7


The idea of gods getting their power from the number or strength of their believers is definitely not original to Pratchett, in fact it's older than him.

The earliest use in sf that I can place on top of my head is by the Belgian fantasy and horror writer Jean Ray (I don't think many of his works have been translated into English, if any). In Malpertuis (novel, 1943), Greek gods, titans and other supernatural beings are almost dead due to the lack of believers. The movie Malpertuis is based on the book; I haven't seen it, but from the summary I think it has the same plot element. Ray wrote:

Les hommes ne sont pas nés du caprice ou de la volonté des dieux, au contraire, les dieux doivent leur existence à la croyance des hommes. Que cette foi s'éteigne et les dieux meurent.
Men are not born of the whim or will of the gods, on the contrary, gods owe their existence to the belief of men. Should this belief wither, the gods will die.

This is supposedly inspired by a quote by Voltaire: “de la croyance des hommes sont nés les dieux” (gods are born of the belief of men). I haven't found a precise reference, so Voltaire may not have actually written this (French speakers often attribute quotes to Voltaire by default).

TVTropes (thanks Bill) cites roughly contemporaneous stories by Lord Dunsany. In Poseidon (collected in In the Land of Time and Other Fantasy Tales), Poseidon is diminished and dies from the lack of worshippers. Some of the stories in Time and the Gods may play on that concept, though I don't think gods do need believers to survive in that universe.

An earlier example is H.P. Lovecraft's Elder Gods, who come when called. This isn't exactly the same idea — the Elder Gods are not exactly on the same plane as gods from Greek, Hindu, Jewish, and other real religions, and they are not so much powerless as asleep.

  • I thought Lovecraft was influenced by Dunsany, not the other way around?
    – sebsmith
    Commented Apr 7, 2011 at 19:39
  • @sebsmith: I think it went both ways. Poseidon was published in 1941, so I doubt Lovecraft is was influenced by it.
    – user56
    Commented Apr 7, 2011 at 19:57
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    Lovecraft's beings don't need human belief. Unfortunately, they exist all by themselves. Commented Apr 8, 2011 at 2:52
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    +1 for "French speakers often attribute quotes to Voltaire by default" :D Commented Apr 10, 2011 at 16:53
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    @Tango You may be thinking of van Vogt's 1943 novel The Book of Ptath. If I remember right, the "gods" in that story got their powers somehow from their worshippers.
    – user14111
    Commented Feb 2, 2015 at 14:34

1940: The earliest source I know of for the "Gods Require Belief" idea is Lester del Rey's short story "The Pipes of Pan", first published in the Unknown Fantasy Fiction, May 1940, available at the Internet Archive.

Pan burying his last worshiper:

Pan's great shoulders drooped as he wiped the last of the earth from his hands. Experimentally, he chirped at the cricket, but there was no response, and he knew that the law governing all gods still applied. When the last of their worshipers were gone, they either died or were forced to eke out their living in the world of men by some human activity. Now there would be hunger to satisfy, and in satisfying it, other needs of a life among men would present themselves. Apollo was gone, long since, choosing in his pride to die, and the other gods had followed him, some choosing work, some death.

How other gods made their living:

Well, if work he must, work he would. The others had come to it, such as still lived. Ishtar, or Aphrodite, was working somewhere in the East as a nursemaid, though her old taste for men still cost her jobs as fast as she gained them. Pan's father, Hermes, had been working as a Postal Telegraph boy the last he'd seen of him. Even Zeus, proudest of all, was doing an electrician's work somewhere, leaving only Ares thriving in full god-head. What his own talents might be, time alone would tell, but the rippling muscles of his body must be put to some good usage.

As you might expect, Pan finds a career in music. He drops the syrinx and takes up the clarinet:

Out on the floor were his worshipers, every step an act of homage to him. Homage that paid dividends, and was as real in its way as the sacrifices of old; but that was a minor detail. Right now he was hot. He lifted the instrument higher, drawing out the last wild ecstasy from it. Under his clothes, his tail twitched sharply, but the dancers couldn't see that, and wouldn't have cared if they had. Tin Pan Faunus, Idol of the Jitterbugs, was playing, and that was enough.

  • Puck of Pook's Hill (Kipling 1906) plays with a similar idea. One god is described as being hungry (from having a fake sacrifice) and many gods find occupations. Most just leave the British Isles because of the climate though. Commented Feb 8, 2023 at 6:27

TL;DR: The trope is almost as old as fiction itself.

The ancient Babylonian flood myth, The Epic of Atrahasis, which inspired the better known Epic of Gilgamesh and the biblical flood narrative, was written circa 1800 BCE. In this story, the gods wipe out humanity with a global flood, then find themselves starving to death because, with no humans left to offer sacrifices, they can find no sustenance. When the lone survivor finally makes landfall and offers a sacrifice, they descend on it "like a swarm of flies".

The Anunnaki, great gods,
were sitting in thirst, in hunger...

Ninti wept and spent her emotion;
she wept and eased her feelings.
The gods wept with her for the land.
She was overcome with grief,
she thirsted for beer.
Where she sat, the gods sat weeping;
crouching like sheep at a trough.
Their lips were feverish with thirst,
They were suffering cramp from hunger.

- Atrahasis OB III, 30–31

The next portion of the story is missing from the extant copies, but when it picks up, we read:

The gods sniffed the fragrance
and gathered like flies over the offering.

- Athrahasis III

We can fill in the blanks by reference to Gilgamesh:

Then I sent out everything in all directions and sacrificed (a sheep).
I offered incense in front of the mountain-ziggurat.
Seven and seven cult vessels I put in place,
and (into the fire) underneath (or: into their bowls) I poured reeds, cedar, and myrtle.
The gods smelled the savor,
the gods smelled the sweet savor,
and collected like flies over a (sheep) sacrifice.

- *Gilgamesh, XI


The issue here isn't "belief" so much as "homage" - belief never factors into the story. But clearly, the Anunnaki, the great gods of the Athrahasis, require sacrifices from humans to survive. And considering the fact that Athrahasis was written no later than 1800 BCE, we have an example here that predates all the others provided - by nearly 4,000 years.

  • This should be higher up.
    – Morgoth
    Commented May 7, 2017 at 9:49

Gilbert and Sullivan's first opera, "Thespis", written in 1871, had the sub-title "The Gods Grown Old", and was based around the premise that the Greek/Roman gods of Olympus had become old and decrepit because no-one believed in them anymore.


There's a reference to this idea in Harlan Ellison's story "Working with the Little People," (written in 1977) collected in Strange Wine. The story itself is about how the gremlins need belief to stay alive, but the narrator implies that Nietzsche stated this theory:

It was simply the Nietzschean theory all over again. Nietzsche suggested that when a god lost all its worshipers, the god itself died. Belief was the sustaining force. When a god's supplicants went over to newer, stronger gods, belief in the weaker deity faded and so did the deity.


Fred Saberhagen dealt with this in his Swords books, back in the early 80's. Fritz Leiber dealt with this a bit in the Lankmahr books in the early 70's...His take on it is actually very similar to Terry Pratchett's.


Douglas Adams kind of did a throwaway parody of the idea when describing the Babelfish in Hitchhikers Guide to the Galaxy (1979):

Now it is such a bizarrely improbable coincidence that anything so mindbogglingly useful could have evolved purely by chance that some thinkers have chosen to see it as a final and clinching proof of the non-existence of God.

The argument goes something like this: "I refuse to prove that I exist," says God, "for proof denies faith, and without faith I am nothing."

"But," says Man, "the Babel fish is a dead giveaway isn't it? It could not have evolved by chance. It proves that you exist, and so therefore, by your own arguments, you don't. QED."

"Oh dear," says God, "I hadn't thought of that," and promptly disappears in a puff of logic.

That pre-dates Discworld by four years.

  • This doesn't seem like the same thing at all.
    – mattdm
    Commented Aug 18, 2016 at 15:14
  • @mattdm: “without faith I am nothing” doesn’t swing it for you? Commented Aug 18, 2016 at 15:30
  • No; that's referring to a different theological idea, and the claim is about faith rather than belief.
    – mattdm
    Commented Aug 18, 2016 at 15:35
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    @mattdm: completely different! What was I thinking!? Commented Aug 18, 2016 at 20:49
  • I don't know what you are thinking. I am guessing you mean that to be sarcastic, but, in fact, there is a difference, and specifically, Adams in the joke is playing on one but not the other. Crudely put, faith is belief without evidence, and that is specifically what God says is essential (at least in the exchange above). This is very different from saying that God's power (or existence) comes from belief — in fact, it says nothing about that.
    – mattdm
    Commented Aug 18, 2016 at 20:53

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