Zvi Hirsch Chajes ( - November 20, 1805 - October 12, 1855; also Chayes or Hayot or Chiyos) was one of the foremost Galician talmudic scholars. He is best known for his work Mevo Hatalmud (Introduction to the Talmud), which serves both as commentary and introduction. Chajes is also known as "The Maharatz Chajes" (), the Hebrew acronym for "Our Teacher, the Rabbi, Zvi Chajes". He is possibly the only commentator included in the back of the Vilna Shas edition with a PhD. Biography Chajes was born in Brody. He studied under a number of great scholars of that time, particularly R. Ephraim Zalman Margulies. In addition to his traditional talmudic education, he was educated in modern and classical languages and literature, as well as geography, history and philosophy. In 1846, a law was promulgated in Austria compelling rabbinical candidates to pass a university examination in the liberal arts and philosophy; Chajes received the degree of Doctor of Philosophy. At twenty two, he was called to occupy an important rabbinic position in the district of Zhovkva (Zolkiev), Galicia. In this position, he fought against the innovations being introduced into Judaism at that time, while also opposing the increasing conservatism among his Orthodox colleagues. Chajes died prematurely in 1855 at the age of 50, only three years after being appointed to the prestigious post of rabbi of Kalisz (Kalish), Poland. Chajes produced many works of scientific study of Judaism that were faithful to tradition but modern in their orientation and organization. In this role he is closely associated with Nachman Krochmal and S. L. Rapoport. "There are few modern works dealing in detail with the Halakha or the Haggadah which have not profited by the labors of Chajes, although his name is often passed over in silence. His Introduction to the Talmud is especially noteworthy..." . Dr. Bruria Hutner David describes Chajes as "Traditionalist and Maskil" - as the subject of her PhD thesis. The name Zvi Hirsch is a bilingual tautological name in Yiddish. It means literally "deer-deer" and is traceable back to the Hebrew word צבי tsvi "deer" and the German word Hirsch "deer". Works Mevo Hatalmud (The Student's Guide Through the Talmud, English edition published by Feldheim, 1952) deals with both the Halakha, the legal aspects of the Talmud, and the Aggadah, the non-legal portions. In this work, Chajes imparts a detailed history and classification of the Talmud