Attributed to Swift in many places. According to the Oxford Treasury of Sayings and Quotations (Oxford University Press, 2011, p. 270), this quotation is "not traced in Swift's works", and is thus "probably apocryphal". It is possibly a paraphrase of a sentence in Swift's Letter to a young clergyman (see above): "Reasoning will never make a man correct an ill opinion, which by reasoning he never acquired".
• The earliest print cite to anything resembling this was found by Quote Investigator in a 1786 essay by U.S. Congressman Fisher Ames: "I have heard it remarked, that men are not to be reasoned out of an opinion that they have not reasoned themselves into."

It is useless to attempt to reason a man out of a thing he was never reasoned into.

— Jonathan Swift

What It Means

This is a placeholder explanation generated by the low-overhead model. It interprets "It is useless to attempt to reason a man out of a thing he was never reasoned into." in the context of "Attributed to Swift in many places. According to the Oxford Treasury of Sayings and Quotations (Oxford University Press, 2011, p. 270), this quotation is "not traced in Swift's works", and is thus "probably apocryphal". It is possibly a paraphrase of a sentence in Swift's Letter to a young clergyman (see above): "Reasoning will never make a man correct an ill opinion, which by reasoning he never acquired".
• The earliest print cite to anything resembling this was found by Quote Investigator in a 1786 essay by U.S. Congressman Fisher Ames: "I have heard it remarked, that men are not to be reasoned out of an opinion that they have not reasoned themselves into."" to mean that wisdom is timeless.

Source: Wikiquote: "Jonathan Swift" (Disputed) The 'What it means' explanation text was generated by Google Gemini Flash (accessed January 18, 2026). https://gemini.google.com/app
Jonathan Swift

About Jonathan Swift

Jonathan Swift (30 November 1667 – 19 October 1745) was an Anglo-Irish writer and satirist. Acclaimed as one of the finest prose satirists in the English language, he was also well known for his poetry and essays.