The Annotated Edition
198:— by Percy Bysshe Shelley
This piece is a prose note that Shelley included with his long poem *Queen Mab*.
§01Quick summary
What this poem is about
§02Themes
Recurring themes
§03Line by line
Stanza by stanza, with notes
Necessity! thou mother of the world!
Editor's note
This single exclamatory line serves as the epigraph — directly addressing Necessity as if it were a goddess. Shelley takes the language of religious invocation and flips it, placing a philosophical principle above a deity as the dominant force in existence. The exclamation mark conveys passion rather than detachment; Shelley truly holds this idea in high regard.
He who asserts the doctrine of Necessity means that, contemplating the events which compose the moral and material universe...
Editor's note
Shelley begins by defining his concept. Every event in the universe is part of a continuous chain of cause and effect; nothing could have unfolded in any other way. He references David Hume's perspective on causation — we determine causes based on the consistent connection between events — and applies this idea from the physical realm to human reasoning and decision-making. The essential equation he wants readers to remember is: 'Motive is to voluntary action what cause is to effect.'
Every human being is irresistibly impelled to act precisely as he does act...
Editor's note
Here, Shelley makes the argument personal and definitive. Before you were born, a series of causes was already set in motion that would shape every thought you'd ever have. He then turns the argument around: *if* Necessity were false, science itself would fall apart — we wouldn’t be able to predict anything, whether it’s chemistry, human behavior, or if a friend will still be a friend tomorrow. He uses the aged farmer and the experienced statesman as everyday examples: their wisdom only holds true because the world operates in a consistently necessary way.
But, whilst none have scrupled to admit necessity as influencing matter, many have disputed its dominion over mind.
Editor's note
Shelley recognizes a common counterargument: while people believe that rocks and planets follow fixed laws, they often think the mind operates differently, feeling subjectively free. To address this, he cites Hume nearly word-for-word — the sensation of freedom stems from our ignorance of the underlying causes influencing us. Our will is subject to the same principles that govern everything else.
The idea of liberty, applied metaphorically to the will, has sprung from a misconception of the meaning of the word power.
Editor's note
Shelley criticizes the concept of 'free will' as a confusing use of language. To him, 'power' simply refers to the ability to create an effect — a magnet has it, a lever has it, and so does human will. Proponents of free will argue that the will can oppose even the strongest motive, but Shelley argues that 'strongest motive' essentially refers to the one that prevails. Claiming that the will can override it is inherently contradictory.
The doctrine of Necessity tends to introduce a great change into the established notions of morality, and utterly to destroy religion.
Editor's note
This is the most provocative paragraph. If no one could have acted differently, punishing someone for the sake of punishment is merely revenge disguised as justice. Shelley references the historical case of Damiens—a man who was tortured to death in 18th-century France—to argue that such cruelty did nothing to enhance human happiness and thus had no moral justification. A Necessarian may still steer clear of a viper and disapprove of wrongdoing, but they experience compassion instead of hatred for those who err, recognizing that they could not have acted differently.
Religion is the perception of the relation in which we stand to the principle of the universe.
Editor's note
Shelley turns to God with this argument: 'God' began as a term for the unknown cause behind things, but it became confused with the idea of a person who has human emotions and behaves like a monarch. If Necessity is real, then God — if He exists — is just as constrained by it as everything else. This implies that He is responsible for evil as much as for good. The earthquake, the battle, and the tyrant are all His doing, just like sunshine and peace.
But we are taught, by the doctrine of Necessity, that there is neither good nor evil in the universe, otherwise than as the events to which we apply these epithets have relation to our own peculiar mode of being.
Editor's note
Shelley arrives at a nearly relativist conclusion: good and evil aren't inherent features of the universe; they depend on how we relate to events. The concepts of hell and damnation seem even less rational than the idea of a punishing God — if God created humans as they are, then condemning them for their nature is akin to one person drawing a straight line and blaming someone else for its crookedness.
A Mahometan story, much to the present purpose, is recorded, wherein Adam and Moses are introduced disputing before God...
Editor's note
Shelley concludes with a tale from Sale's translation of the Koran where Adam informs Moses that his sin was inscribed in divine law forty thousand years before his creation. Shelley doesn't use this to support Islam; rather, he highlights how the idea of Necessity exists even within religious contexts. If God knew and predetermined Adam's fall, then blaming Adam doesn’t make sense—this perfectly illustrates Shelley's argument about free will and moral responsibility throughout the note.
§04Tone & mood
How this poem feels
§05Symbols & metaphors
Symbols & metaphors
- The chain of causes
- The central image of the entire note. The "immense and uninterrupted chain of causes and effects" symbolizes the complete interconnectedness of the universe — nothing exists in isolation, and nothing happens by chance. This reflects Shelley's perspective on both free will and divine providence.
- The viper and the tiger
- Shelley uses these dangerous animals to show that we can label something as harmful without despising it or assigning it moral blame. We steer clear of a viper because it poses a threat, not because it is evil — and a Necessarian should view criminals in the same light.
- The aged husbandman and the old statesman
- These two figures illustrate practical wisdom grounded in the concept of Necessity. The farmer and the politician are more skilled than novices simply because the world operates in a reliable, causal manner. In Shelley's view, their expertise serves as everyday evidence that Necessity exists.
- Adam's transgression written before creation
- The closing story from the Koran symbolizes the concept of preordained fate. According to Shelley, Adam's sin was recorded in the law fifty thousand years before the world came to be, which makes the notions of blame and punishment seem absurd. This suggests that a religious tradition's own text subtly affirms the doctrine of Necessity.
- The monarch and his subjects
- Shelley likens how people speak to God to how subjects speak to a king — through flattery, fear, and requests. This comparison diminishes the spiritual dignity of religious devotion, revealing it instead as a political dynamic imposed on the universe.
§06Historical context
Historical context
§07FAQ
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