The Aristobulus referred to here was an Alexandrian Jew and Peripatetic philosopher (see the passages in Clement and Eusebius referred to below), who lived in the second century b.c., and was the author of Commentaries upon the Mosaic Law, the chief object of which was to prove that Greek philosophy was borrowed from the books of Moses (see Clement, Strom. V. 14, who refers only to Peripatetic philosophy, which is too narrow). The work is referred to by Clement of Alexandria (in his Stromata, I. 15; V. 14; VI. 3, &c.), by Eusebius (in his Præp. Evang. VII. 14; VIII. 9, 10; XIII. 12, &c.), by Anatolius (as quoted by Eusebius below, in Bk. VII. chap. 32), and by other Fathers. The work is no longer extant, but Eusebius gives two considerable fragments of it in his Præp. Evang. VIII. 10, and XIII. 12. See Schürer’s Gesch. d. jüdischen Volkes im Zeitalter Jesu, II. p. 760 sq. Schürer maintains the authenticity of the work against the attacks of many modern critics.