Pecunia non olet
||This article has an unclear citation style. (September 2009)|
Vespasian imposed a Urine Tax (Latin: vectigal urinae) on the distribution of urine from public urinals in Rome's Cloaca Maxima (great sewer) system. (The Roman lower classes urinated into pots which were emptied into cesspools.) The urine collected from public urinals was sold as an ingredient for several chemical processes. It was used in tanning, and also by launderers as a source of ammonia to clean and whiten woollen togas. The buyers of the urine paid the tax.
The Roman historian Suetonius reports that when Vespasian's son Titus complained about the disgusting nature of the tax, his father held up a gold coin and asked whether he felt offended by its smell (sciscitans num odore offenderetur). When Titus said "No," he replied, "Yet it comes from urine" („Atqui ex lotio est“).
The phrase Pecunia non olet is still used today to say that the value of money is not tainted by its origins. Vespasian's name still attaches to public urinals in France (vespasiennes), Italy (vespasiani), and Romania (vespasiene).
 In literature
"Vespasian's axiom" is referred to in passing in the Balzac short story Sarrasine in connection with the mysterious origins of the wealth of a Parisian family. The proverb receives some attention in Roland Barthes' detailed analysis of the Balzac story in his critical study S/Z. It is possible that F. Scott Fitzgerald alludes to Vespasian's jest in The Great Gatsby with the phrase "non-olfactory money."
In That Hideous Strength by C. S. Lewis, the Warden of Bracton College is given the nickname "Non-Olet" for having written "a monumental report on National Sanitation. The subject had, if anything, rather recommended him to the Progressive Element. They regarded it as a slap in the face for the dilettanti and Die-hards, who replied by christening their new Warden Non-Olet."
In the Pulitzer Prize-winning novel "All The King's Men," by Robert Penn Warren (1946), protagonist Jack Burden muses that perhaps Vespasian had been right. At the time, Jack is beset with doubts about the source of his inheritance.
- Warren, Robert Penn (1946). All The King's Men. New York: Bantam. p. 359. ISBN 0-553-20454-8.
- Sueton, Vespasian 23 English, Latin. Cf. Dio Cassius, Roman History, Book 65, chapter 14,5 English, Greek/French (66, 14)
- Barthes, Roland (trans. Richard Miller) (1974) S/Z New York: Hill and Wang - Farrar, Strauss and Giroux, pages 39–40; see lexia number 26
- Fitzgerald, F. Scott (1925) The Great Gatsby Scribner, New York. p. 73
- That Hideous Strength, p. 32
- Lissner, Ivar. Power and Folly: the story of the Caesars
- Suetonius. De Vita Caesarum--Divus Vespasianus
- Laporte, Dominique. History of Shit