Classification — Wrong Mouth
He never said it. She wrote it, as a summary of him.
The line
“I disapprove of what you say, but I will defend to the death your right to say it.”
Where it comes from
Voltaire, the patron saint of free speech, defending an opponent’s right to be heard. It is such a perfect compression of the Enlightenment ideal that few people think to ask where it is written down. No sentence like it has turned up in his own writings.
First in print
The earliest appearance we can verify is in a 1906 biography. Evelyn Beatrice Hall, writing as S. G. Tallentyre, is describing Voltaire’s reaction to the burning of Helvétius’s book De l’esprit. She sets the line in quotation marks and follows it with the words “was his attitude” — a summary of how he behaved, in her own phrasing.
Evelyn Beatrice Hall (as S. G. Tallentyre), The Friends of Voltaire, London, 1906. Hall herself later described the line as a paraphrase.
How it travelled
Over the following decades the quotation marks did their work. Anthologies and speeches printed the sentence under Voltaire’s name alone, and Hall’s “was his attitude” was dropped along with her name. It is now one of the first things cited in any argument about free speech, usually without a source and nearly always as his.
What we could not settle
Whether Hall had a particular remark of his in mind. Nobody has found one, but the sentiment — that a bad book should be answered, not burned — is plainly his. If you know of a sentence earlier than 1906 that says this in these words, write to us.