Cujas was twice married. He had a son of great talents, who died in 1531; and a daughter by his second marriage, who was notorious for her disorderly life.
Cujas was distinguished both as a teacher and a writer. His merits principally consisted in substituting a more rational system in place of the unscientific method of and in grounding his interpre tation of the civil law on a profound study of the original authors, and of the manuscripts of the Roman law. He possessed in his own library 500 manuscripts on the Roman law. His knowledge of archeology also and his exact acquaintance with the ancient languages gave him a decided superiority over other civilians. In teaching as well as in his writings he followed the exegetical method, in which he may still be considered as a model.
The works of Cujas are very numerous. They are commonly divi ded into 'Opera Priora,' which were published in his life by himself : first at Paris, 1577, 5 vols. fol, and again in 1583 ; and ' Opera Posthuma,' which were edited by his friende after his death. Both the Opera Priors' and Poathuma ' were first collected and edited by Alexander Scot, Lyon, 1614. The most complete editiou is that by Fabrot, Paris, 1653, 10 vols. fol. As it is very difficult to find what we want in the works of Cujas, tho Promptuarium Operum Jacobi Cujaci; auctore Dom. Albunensi,' Naples, 1763, 2 vols. foL, is of great
assistance.
The works of Cujas consist : 1, of editions of the original works on the civil law, principally of tho Codex Thcodosianua," Pauli receptaa sententim," Justinian'a Institutes,' of the three latter books of the ' Codex Justinianus; ' of the Conauetudines Feudorurn; with notes, and a translation of the sixtieth book of the ' Basilika,' of which be also published an edition; 2, of commentaries, notes, and interpre tations relating to most parts of the Institutes, Pandects, Code, and Novels; a 'Commentary on the Decretala ;* and Lectures on many passages of the Pandects; 3, other important works, as his ' Obser vationum and Emendationurn libri xxviii,' a work which civilians in the time of Cujas called 'opus incomparabile et divinum.' It contains corrections of the original works on law and of a great number of other authors, both Greek and Latin. This work is a real treasure to philologists; 4, 'Paratilla ad Digests, et in libros ix., Codicil,' which is a summary of the titles of the Pandects and the Constitutions of the Code.
(Elogc de Cafes, par Bernardi, Lyon, 1775 ; Ilistoire de Cujas, par Berriot; Saint Prix, history of the Roman Law, which is the beat biography of Cujas; Ed. S'pangenberg ; Cajaa and seine Zeitgenossen., Leipzig, 1822.)