Benjamin Franklin,
Silence Dogood, No. 10
(1722)
“ First, Sir William Petty allows the City of London to contain about a Million of People, and our Yearly Bill of Mortality never yet amounted to 25000 in the most Sickly Years we have had, Plague Years excepted, sometimes but to 20000, which is but One in Fifty: Now it is to be consider'd here, that Children and Ancient People make up, one time with another, at least one third of our Bills of Mortality; and our Assurances lies upon none but the Midling Age of the People, which is the only age wherein Life is any thing steady ”
