Writing of the period of the mid to late 1300s in the area of Florence:
(p. 114) The surviving archive of a single great merchant of this period, Francesco di Marco Datini of nearby Prato–not, by any means, the greatest of these early capitalists–contains some 150,000 letters, along with 500 account books or ledgers, 300 deeds of partnership, 400 insurance policies, several thousand bills of lading, letters of advice, bills of exchange, and checks. On the first pages of Datini’s ledgers were inscribed the words: “In the name of God and of profit.”
Greenblatt, Stephen. The Swerve: How the World Became Modern. New York: W. W. Norton & Company, 2011.