Davanzati wrote on economics as a
metallist. His works included
Lezione delle monete (1588) and
Notizie dei cambi (1582). Davanzati's
Discourse upon Coins was translated by
John Toland (London: Awnsham and John Churchil, 1696) from the original 1588 edition. The two treatises are included in
Pietro Custodi’s
Scrittori classici italiani di economia politica. To judge him correctly it must be considered that he was a contemporary of
Gasparo Scaruffi (1582), of
Jean Bodin (1578), and of William Stafford (1581), men who wrote their books half a century before
Petty and
Locke were born (Petty, 1623-1687; Locke, 1632-1704). Davanzati begins his
Lezione delle monete by showing how “
barter is a necessary complement of division of labour amongst men and amongst nations”; he then passes on to show how there is easily a “want of coincidence in barter,” which calls for a “medium of exchange”; and this must be capable of “subdivision,” and be a “store of value.” He then goes off upon a historical digression on currencies, and on returning from thence recognises in
money “a common measure of value.” This leads him to a dissertation on the causes of value in general, in which respect his remarks are also worth mentioning, because he has clearly shown that utility and value are “accidents of things” and functions of the “quantity in which they exist.” Proceeding to examples, he remarks “that one single egg was more worth to
Count Ugolino in his tower than all the gold of the world,” but that, on the other hand, “ten thousand grains of corn are only worth one of gold in the market,” and that “water, however necessary for life, is worth nothing, because superabundant.” In the
siege of Casilinum “a rat was sold for 200
florins, and the price could not be called exaggerated, because next day the man who sold it was starved and the man who bought it was still alive.” Returning to his argument, he says all the money in a country is worth all the goods, because the one exchanges for the other and nobody wants money for its own sake. Davanzati does not know anything about the rapidity of circulation of money, and only says every country needs a different quantity of money, as different human frames need different quantities of blood. The rest of his treatise is directed against artificial deterioration of money. The
mint ought to coin money gratuitously for everybody; and the fear that, if the coins are too good, they should be exported is simply illusory, because they must have been paid for by the exporter. Davanzati insists particularly on the injury the defrauding government is the first to experience when it tampers with the coin. In his essay on
exchanges Davanzati goes minutely into the mechanism of exchanges, but he evidently does not suspect the causes of the phenomenon nor its limits. ==Notes==