Cicero's two most recognizable lines are the shout and the maxim: "O tempora, o mores!" — thrown at a Senate too timid to act, from the First Catilinarian — and the claim, made twice in his own words, that friendship and virtue are what hold everything else together. Both survive in the original Latin and Latin-derived English translations, on pages you can still read today. Here they are, grouped by what he was actually arguing, followed by the fakes that circulate under his name.
Politics and law under pressure
Cicero's most famous cry came in 63 BC, as consul, denouncing the Senate's failure to move against Catiline: "O tempora, o mores!" — roughly, "Oh, the times! Oh, the customs!" This is verified against the Latin text of In Catilinam 1.2; no English rendering of that specific page has been checked word-for-word, so treat the Latin as the exact quotation and any English gloss as paraphrase.
Two more lines come from his courtroom and constitutional writing. Defending Milo, he argued: "For laws are silent when arms are raised" (Pro Milone 4.11). And in his dialogue on law itself, he set down the formula later carved onto more than one government building: "Ollis salus populi suprema lex esto" — "the welfare of the people shall be the supreme law" (De Legibus, Book 3, §8; the Latin is exact, the English is a standard gloss).
Friendship, in two translations
Cicero returned to friendship more than once. In his speech Pro Plancio, he called it the root of everything else worth having: "For this one virtue is not only the greatest, but is also the parent of all the other virtues." In his dedicated dialogue Laelius de Amicitia, one translator renders his definition as "friendship is nothing else than an accord in all things, human and divine, conjoined with mutual goodwill and affection," while another, working from the same treatise, gives the more intimate image: "In the face of a true friend a man sees as it were a second self."
Old age, mortality, and philosophy
Writing as the elderly Cato in On Old Age, Cicero compared a well-finished life to a play: it is "not likely, if she has written the rest of the play well, that she has been careless about the last act like some idle poet." And in the Tusculan Disputations, working through Socrates's example, he wrote that "the whole life of a philosopher is... a meditation on death." That is the real sentence — the crisper line often quoted as "to philosophize is to learn how to die" is a later paraphrase, closer to Montaigne's essay riffing on Cicero than to anything Cicero wrote himself.
The value of letters
Defending the poet Archias's citizenship, Cicero made his case for education and literature in a line that has outlived the trial: "These studies are the food of youth, the delight of old age; the ornament of prosperity, the refuge and comfort of adversity."
Quotes Cicero never said
Two lines get attached to Cicero constantly online, and neither holds up. "A nation can survive its fools, and even the ambitious. But it cannot survive treason from within" has no ancient source at all — PolitiFact found no trace of it in his surviving writings or speeches and rated the attribution false. And "The budget should be balanced, the treasury should be refilled, public debt should be reduced" isn't Roman at all — the University of Texas at Austin's Cicero site traces it to Taylor Caldwell's 1965 novel A Pillar of Iron.
Hear him argue it himself
Reading Cicero's quotes shows the lawyer's instinct for the compressed line. Our Cicero — an AI recreation of the man, honestly labeled — argues the way the record says he argued: building a case fact by fact, then asking who profits. Ask him what O tempora, o mores actually cost him, or whether the advantageous and the honorable can really be pulled apart.
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