This is Mary Shelley’s own wording, confirmed in Frankenstein; or, The Modern Prometheus (1818) — though in the novel it is spoken by the Creature to Victor Frankenstein, not by Shelley in her own voice.
“Beware; for I am fearless, and therefore powerful” Beware; for I am fearless, and therefore powerful. — the Creature, in Mary Shelley's Frankenstein (1818)
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Evoking the world of Mary Shelley — English novelist, essayist & editor. Theme: "Beware; for I am fearless, and therefore powerful". Atmospheric and restrained, cinematic directional light, a muted period-appropriate palette, fine grain and texture. Compose with generous empty space for the quote and a small credit line. No lettering in the image itself.
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Vol. III, Ch. III (1818 text) / Chapter 20 (1831 revised numbering)
You can blast my other passions; but revenge remains—revenge, henceforth dearer than light or food! I may die; but first you, my tyrant and tormentor, shall curse the sun that gazes on your misery. Beware; for I am fearless, and therefore powerful. I will watch with the wiliness of a snake, that I may sting with its venom. Man, you shall repent of the injuries you inflict.
the Creature, to Victor Frankenstein
Spoken after Victor destroys the unfinished female companion he had promised to create — this is a threat of revenge, not a personal statement by Shelley.
First published anonymously as Frankenstein; or, The Modern Prometheus ↗ (London: Lackington, Hughes, Harding, Mavor & Jones, 1818), written when Mary Shelley was eighteen to twenty years old.
The exact line is confirmed in Volume III, Chapter III of the 1818 first-edition text via a full chapter transcription ↗.
Despite its life as inspirational merchandise, the line does not appear among the curated highlights on Mary Shelley’s Wikiquote page ↗ — a reminder of how far it has drifted from its original, darker context.
✓Public domain
Frankenstein was first published in 1818, well before the 1931 threshold, and Mary Shelley died in 1851 — both the original text and her later 1831 revision are in the public domain in the United States.
Fact-check
Often misattributed
The authorship here isn’t in doubt — Mary Shelley wrote every word of this line. What’s misleading is the context it’s stripped of when it circulates as a standalone inspirational quote.
✕
Context, not authorshipPopular "empowerment" quote cards, prints, and notebooks
Widely sold and shared as if it were Mary Shelley speaking in her own voice about her own fearlessness, when it is in fact dialogue from a fictional character — the Creature — delivering a threat of revenge against his creator.
✓The words are genuinely Mary Shelley’s, confirmed in the primary text of Frankenstein, Vol. III, Ch. III ↗ — but they belong to the Creature, mid-threat, not to Shelley speaking for herself.
Context
Why it mattered
The line comes near the novel’s climax, just after Victor Frankenstein destroys the half-finished female companion he had promised to build for his Creature. Devastated and enraged, the Creature confronts him on a desolate stretch of the Orkney coast, ending a long speech of grief and threat with: “You can blast my other passions; but revenge remains—revenge, henceforth dearer than light or food! I may die; but first you, my tyrant and tormentor, shall curse the sun that gazes on your misery. Beware; for I am fearless, and therefore powerful.”
In its original context, then, this is not a personal motto of Mary Shelley’s but a villain’s vow of vengeance — which makes its popular modern life as an inspirational, empowerment-themed quote (printed on notebooks, prints, and posters) something of an irony. The words are genuinely Shelley’s own prose, just not her own voice.
In the novel it is the Creature’s threat of revenge — not Mary Shelley’s personal creed.
Read the full story
Frankenstein was published anonymously in three volumes on 1 January 1818; Mary Shelley was not credited by name on an English title page until the second edition of 1823.
Shelley substantially revised the novel for a single-volume 1831 edition. The “Beware; for I am fearless, and therefore powerful” line is unchanged between the 1818 and 1831 texts.
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Filed under
More provenance-checked quotes on the same theme, each with its reuse status.
Mary Wollstonecraft Shelley wrote Frankenstein; or, The Modern Prometheus at eighteen and nineteen, publishing it anonymously in 1818 when she was twenty. Daughter of philosophers William Godwin and Mary Wollstonecraft, and wife of poet Percy Bysshe Shelley, she went on to write further novels, short stories, and travel writing, and edited her husband’s posthumous work.
For writers & researchers
Cite this
Primary source — Chicago
Shelley, Mary Wollstonecraft. Frankenstein; or, The Modern Prometheus. London: Lackington, Hughes, Harding, Mavor & Jones, 1818 (rev. ed. Henry Colburn and Richard Bentley, 1831), vol. 3, ch. 3 (1818) / ch. 20 (1831).
MLA (9th ed.)
Shelley, Mary Wollstonecraft. Frankenstein; or, The Modern Prometheus. Lackington, Hughes, Harding, Mavor & Jones, 1818.
APA (7th ed.)
Shelley, M. W. (1818). Frankenstein; or, the modern Prometheus. Lackington, Hughes, Harding, Mavor & Jones.
This verification page
Quotle.info. “Who really said ‘Beware; for I am fearless, and therefore powerful’?” Last verified 8 Jul 2026. https://quotle.info/who-said/beware-for-i-am-fearless-and-therefore-powerful