Köln, Erzbischöfliche Diözesan- und Dombibliothek 128, fol. 10v

Paucapalea (ca. 1145-1150), Summa, ed. Johann F. von Schulte (Giessen 1890) 4:

"Iustitia est nature tacita conventio in adiutorium multorum inventa."

Stephan Kuttner, "A Forgotten Definition of Justice.” Mélanges Gerard Fransen (Studia Gratiana 20; Rome 1976) 76-110, reprinted in The History of Ideas and Doctrines of Canon Law in the Middle Ages (London 1980)  80.