A Scholar From Near Baghdad Builds a Case

Ya'qub al-Qirqisani wrote in the first half of the tenth century, and his own family name points toward origins somewhere near Baghdad, whether the ancient town of Circesium or a village called Qarqasan. Whichever it was, he grew up immersed in the intellectual life of Islamic Iraq at a moment when Arabic theology, philosophy and the natural sciences were being argued over with real sophistication, and he absorbed enough of that literature to write comfortably within it himself. What set him apart from many Karaite writers of his generation was that he had also studied the Rabbanite tradition he opposed in real depth, working through the Mishnah, the Talmud and Rabbanite liturgical practice closely enough to argue against them on their own terms rather than from the outside.

That combination shaped his major work, Kitab al-Anwar wal-Maraqib, the Book of Lights and Watchtowers. Rather than simply asserting Karaite positions, Qirqisani built his case by first laying out, in careful and comparatively even handed detail, the history of Jewish religious factions as he understood it, before turning that history into an argument for his own community's reading of the law. Modern historians still consult his survey for information found nowhere else, even when they read past it toward the legal argument he actually wrote the book to make.