A nation can survive its fools, and even the ambitious. But it cannot survive treason from within.

PolitiFact (2019) traced the passage to Taylor Caldwell’s novel A Pillar of Iron (Doubleday, 1965), where it is a speech of Cicero ‘Recorded by Sallust’; Wikiquote lists it among quotes from the novel misattributed to Cicero, with the full passage. The earliest use as Cicero’s found here is Millard F. Caldwell’s address ‘Cicero’s Prognosis’ to the Association of American Physicians and Surgeons (Columbus, Ohio, 7–9 October 1965), which paraphrases the novel’s story of Cicero and quotes the passage as Cicero’s words to the senate without naming the novel (read in the AAPS reprint of March 1996). The novel was not seen, so its page in the first edition and its exact wording were not confirmed here; a Wikiquote editor notes that the novel had been reviewed in the American Bar Association Journal in September 1965, shortly before the justice’s speech. The English text of Against Catiline I held in the atlas (Yonge) has no ‘survive’ and no sentence like it.

1. 1965Earliest found · credited to Cicero (a character in the novel)Taylor Caldwell’s novel about Cicero, A Pillar of Iron, gives the passage as a speech of Cicero before the senate, credited within the novel to Sallust.Taylor Caldwell, A Pillar of Iron (Garden City, New York: Doubleday, 1965), 661 (edition used by PolitiFact; Wikiquote gives p. 661 of the Open Road Media reprint, 2017). Checked on another researcher’s citation, not seen first-hand. Source
2. October 1965Credited to CiceroMillard F. Caldwell, a justice of the Florida Supreme Court and former governor, quotes the passage as Cicero’s farewell words to the senate in his address ‘Cicero’s Prognosis’ at the 22nd Annual Meeting of the Association of American Physicians and Surgeons, Columbus, Ohio, without naming the novel.A nation can survive its fools, and even the ambitious. But it cannot survive treason from within.Millard F. Caldwell, ‘Cicero’s Prognosis’, address to the 22nd Annual Meeting of the Association of American Physicians and Surgeons, Columbus, Ohio, 7–9 October 1965; reprinted by the AAPS, March 1996. Checked in a full-text transcription. Source
3. March 1996Spread · credited to CiceroThe Association of American Physicians and Surgeons reprints Caldwell’s address, with the passage as Cicero’s, and the reprint is on its website.Millard F. Caldwell, ‘Cicero’s Prognosis’ (address of October 1965), reprinted by the Association of American Physicians and Surgeons, March 1996. Checked in a full-text transcription. Source
4. 29 April 2019Spread · credited to CiceroA Facebook post presents a shortened form as Cicero’s ‘two thousand year old warning about Trump’, dated 42 BC; PolitiFact rates it False on 3 May 2019.PolitiFact, ‘No, a Roman statesman did not warn about Trump thousands of years ago’, 3 May 2019. Checked on another researcher’s citation, not seen first-hand. Source

Circulates as an ancient warning about traitors inside the state, often with a date in 42 or 58 BC and lately aimed at modern politicians. The words come from Taylor Caldwell’s 1965 historical novel A Pillar of Iron, where the fictional Cicero says them to the senate as it turns against him, and the novel credits the speech to Sallust; no such speech is known in Cicero’s works (Catherine Steel, to PolitiFact), and none is cited from Sallust. A Florida Supreme Court justice, Millard F. Caldwell, quoted the passage as Cicero’s in a speech in October 1965, and it has passed as Cicero’s since.

An enemy at the gates is less dangerous than a traitor within, who looks and talks like his victims and corrupts the state from inside. It is a mid-twentieth-century novelist’s speech for Cicero, not a sentence of his.

Taken as Cicero’s own warning, and so as ancient authority for calling political opponents traitors. The words are modern fiction. The idea of an enemy inside the walls does run through Cicero’s speeches against Catiline (Steel points to the second speech, section 11), but, as she told PolitiFact, there are no close parallels in language.

Not Cicero’s words. The passage is modern fiction and is used to brand political opponents as traitors.

• The form on posters and social mediaA nation can survive its fools, and even the ambitious. But it cannot survive treason from within. For the traitor appears not a traitor – He speaks in the accents familiar to his victims, and he appeals to the baseness that lies deep in the hearts of all men. The opening of the shortened form in a Facebook post of 29 April 2019 presenting it as ‘a two thousand year old warning about Trump’, as quoted by PolitiFact. Where it was seen

Power, Society, Politics, Morality, Crime

• The budget should be balanced, the treasury should be refilled, public debt should be reduced, the arrogance of officialdom should be tempered and controlled, and the assistance to foreign lands should be curtailed lest Rome become bankrupt. People must again learn to work, instead of living on public assistance. (misattributed)
• The subs themselves made Jonstone possible by obeying his impossible orders. Charles Bukowski
• We are today in the midst of a cold war. Bernard Baruch
• O tempora, o mores!
• Big Brother isn’t watching. He’s singing and dancing. Chuck Palahniuk

• politifact.com/factchecks/2019/may/03/facebook-posts/no-roman-statesman-did-not-give-warning-about-trum (PolitiFact, 3 May 2019: traced to A Pillar of Iron, p. 661; Catherine Steel’s comment)
• en.wikiquote.org/wiki/Cicero#Misattributed (credited to Caldwell’s novel, with the full passage)
• en.wikiquote.org/wiki/Talk:Cicero (‘The Enemy Within’: Millard Caldwell’s 1965 speech and the novel)
• aapsonline.org/brochures/cicero.htm (Millard F. Caldwell, ‘Cicero’s Prognosis’, 1965, AAPS reprint of 1996)

“A nation can survive its fools, and even the ambitious. But it cannot survive treason from within.” Attributed to Marcus Tullius Cicero. No. No. These are words Taylor Caldwell wrote for Cicero in her 1965 novel A Pillar of Iron, not a speech of the real Cicero; a Florida justice quoted them as Cicero’s the same year. Quotogeny, https://quotogeny.com/q/a-nation-can-survive-its-fools/ (checked 23 October 2026).

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