A quotation by Adolphe Quetelet
"The average man"
[the invention of the concept]
The more progress physical sciences make, the more they tend to enter the domain of mathematics, which is a kind of centre to which they all converge. We may even judge the degree of perfection to which a science has arrived by the facility with which it may be submitted to calculation.
Quoted in E Mailly, Eulogy on Quetelet 1874