No one has found this line in any of Augustine’s works, and Wikiquote lists it as misattributed ↗. Its closest documented ancestor is the Baptist preacher Charles Spurgeon, who said the Bible was like a caged lion that needed no defenders: “Open that door! Let the lord of the forest come forth free” (sermon, 22 January 1888 ↗). The snappy “truth” version is anonymous and modern.
“The truth is like a lion. You don't have to defend it. Let it loose and it will defend itself” Misattributed to Augustine of Hippo: not found in his works. An anonymous modern paraphrase echoing C. H. Spurgeon's lion image for the Bible (1875 speech; 1888 sermon). — Quotle.info
⚠ The slide-ready mistake: crediting this to Augustine of Hippo. Use the credit shown above instead.
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? We couldn’t verify where this wording comes from, so there’s no rights status to give. Safe to present as an unverified or anonymous line — just don’t assert a specific author or source.
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In context
Evoking the themes of truth and power. Theme: "The truth is like a lion. You don't have to defend it. Let it loose and it will defend itself". 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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Provenance
The closest real source: Spurgeon’s caged lion
Sermon
The Lover of God’s Law Filled with Peace
Preached
22 January 1888, Metropolitan Tabernacle, Newington
The Word of God can take care of itself, and will do so if we preach it, and cease defending it. See you that lion. They have caged him for his preservation; shut him up behind iron bars to secure him from his foes! … O fools, and slow of heart! Open that door! Let the lord of the forest come forth free. Who will dare to encounter him? What does he want with your guardian care? Let the pure gospel go forth in all its lion-like majesty, and it will soon clear its own way and ease itself of its adversaries.
Spurgeon, 1888
Spurgeon is talking about the Bible and the gospel, not truth in general. The compressed “truth is like a lion” wording appears in none of his texts quoted here.
Wikiquote lists the line under Augustine’s Misattributed section ↗ with the note “Not found in Augustine’s works”. It points to Spurgeon’s 1875 Bible Society speech and his 1888 sermon.
The Fauxtations blog (18 October 2015) ↗ searched Augustine’s works at CCEL and in Latin and found nothing close. Google Books showed no reference to the quote before 2014, and the blogger had first seen it on Facebook in 2013.
Trent Horn at Catholic Answers (3 August 2020) ↗: “There is no way St. Augustine said this.” He found no book attributing it to Augustine written before the twenty-first century.
The popular “truth is like a lion” wording is an anonymous modern paraphrase with no identifiable author or first publication, so no rights status is asserted. Spurgeon’s 1888 sermon, quoted above, predates 1931 and is not the source of the exact wording.
Rights status is our research, not legal advice — and copyright varies by country and edition. For commercial or published use, confirm with the rightsholder. See terms.
Fact-check
Who gets the credit, and why it’s wrong
This saying is a favorite on Christian social media and church signs, almost always signed “St. Augustine”. Researchers who searched his works found no trace of it.
✕
Most commonAugustine of Hippo Misattributed
Not in his works. A search of his Latin writings found “lion” (leo) and “truth” (veritas) in the same document 125 times, but never near each other (Fauxtations ↗). Wikiquote files it under Misattributed ↗.
✕
SometimesCharles H. Spurgeon Source of the image, not the words
Spurgeon did use the lion metaphor, for the Bible and the gospel: “Open that door! Let the lord of the forest come forth free” (1888 sermon ↗). Trent Horn calls the passage “strikingly similar” but notes “it may not be the origin of this quote” (Catholic Answers ↗).
✓The truth: the line is an anonymous modern compression, seen on Facebook by 2013. Its closest documented ancestor is Spurgeon’s 19th-century lion image for the Bible, and no researcher has found it in Augustine (Wikiquote ↗).
Context
Why the fake matters
The saying is often used to argue that faith needs no reasoned defense. Catholic apologist Trent Horn calls it his least favorite apocryphal saint quote. He points out that it runs against the biblical call to “make a defense to anyone who calls you to account for the hope that is in you” (1 Pet. 3:15) (Catholic Answers ↗).
Spurgeon’s original point was narrower. In his 1875 speech to the British and Foreign Bible Society, as transcribed on Wikiquote ↗, he argued for spreading and explaining the Bible rather than endlessly defending it: “The way to meet infidelity is to spread the Bible.”
Open the door and let the lion out; he will take care of himself. — C. H. Spurgeon, 1875
Explore
Filed under
More provenance-checked quotes on the same theme, each with its reuse status.
Charles Haddon Spurgeon was an English Particular Baptist preacher known to admirers as the “Prince of Preachers,” and he preached at the Metropolitan Tabernacle, Newington. He repeatedly compared the Bible to a lion that needs releasing, not defending. That image is the closest documented source of the modern saying. He spoke of the Bible and the gospel, though, not of “truth” in general, and the popular wording is not his.
For writers & researchers
Cite this
Closest documented antecedent
Not found in Augustine of Hippo’s works; see “Augustine of Hippo,” Wikiquote, Misattributed section. Closest documented antecedent: Charles H. Spurgeon, “The Lover of God’s Law Filled with Peace,” sermon no. 2004, preached January 22, 1888, Metropolitan Tabernacle, Newington, in Metropolitan Tabernacle Pulpit, vol. 34.
This verification page
Quotle.info. “Who really said ‘The truth is like a lion. You don't have to defend it. Let it loose and it will defend itself’?” Last verified 2 Nov 2026. https://quotle.info/who-said/the-truth-is-like-a-lion-you-dont-have-to-defend-it-let-it/