Mordecai Menahem Kaplan was a Lithuanian-born American rabbi, writer, Jewish educator, professor, theologian, philosopher, activist, and religious leader who founded the Reconstructionist branch of Judaism along with his son-in-law Ira Eisenstein. He has been described as a "towering figure" in the recent history of Judaism for his influential work in adapting it to modern society, contending that Judaism should be a unifying and creative force by stressing the cultural and historical character of the religion as well as theological doctrine.
Orthodox Judaism is the collective term for the traditionalist branches of contemporary Judaism. Theologically, it is chiefly defined by regarding the Torah, both Written and Oral, as revealed by God to Moses on Mount Sinai and faithfully transmitted ever since.
There is no established formulation of principles of faith that are recognized by all branches of Judaism. Central authority in Judaism is not vested in any one person or group - although the Sanhedrin, the supreme Jewish religious court, would fulfill this role if it were re-established - but rather in Judaism's sacred writings, laws, and traditions.
Haredi Judaism consists of groups within Orthodox Judaism that are characterized by their strict adherence to halakha and traditions, in opposition to modern values and practices. Its members are usually referred to as ultra-Orthodox in English; however, the term "ultra-Orthodox" is considered pejorative by many of its adherents, who prefer terms like strictly Orthodox or Haredi. Haredi Jews regard themselves as the most religiously authentic group of Jews, although other movements of Judaism disagree.
The Jewish Theological Seminary (JTS) is a Conservative Jewish education organization in New York City, New York. It is one of the academic and spiritual centers of Conservative Judaism and a center for academic scholarship in Jewish studies. The Jewish Theological Seminary Library is one of the most significant collections of Judaica in the world.
Samson Raphael Hirsch was a German Orthodox rabbi best known as the intellectual founder of the Torah im Derech Eretz school of contemporary Orthodox Judaism. Occasionally termed neo-Orthodoxy, his philosophy, together with that of Azriel Hildesheimer, has had a considerable influence on the development of Orthodox Judaism.
Modern Orthodox Judaism is a movement within Orthodox Judaism that attempts to synthesize Jewish values and the observance of Jewish law with the modern world.
Joseph Ber Soloveitchik was a major American Orthodox rabbi, Talmudist, and modern Jewish philosopher. He was a scion of the Lithuanian Jewish Soloveitchik rabbinic dynasty.
Misnagdim was a religious movement among the Jews of Eastern Europe which resisted the rise of Hasidism in the 18th and 19th centuries. The Misnagdim were particularly concentrated in Lithuania, where Vilnius served as the bastion of the movement, but anti-Hasidic activity was undertaken by the establishment in many locales. The most severe clashes between the factions took place in the latter third of the 18th century; the failure to contain Hasidism led the Misnagdim to develop distinct religious philosophies and communal institutions, which were not merely a perpetuation of the old status quo but often innovative. The most notable results of these efforts, pioneered by Chaim of Volozhin and continued by his disciples, were the modern, independent yeshiva and the Musar movement. Since the late 19th century, tensions with the Hasidim largely subsided, and the heirs of Misnagdim adopted the epithet Litvishe or Litvaks.
Jewish religious movements, sometimes called "denominations", include diverse groups within Judaism which have developed among Jews from ancient times. Today in the west, the most prominent divisions are between traditionalist Orthodox movements and modernist movements such as Reform Judaism originating in late 18th century Europe, Conservative originating in 19th century Europe, and smaller others.
Yeshayahu Leibowitz was an Israeli Orthodox Jewish public intellectual and polymath. He was a professor of biochemistry, organic chemistry, and neurophysiology at the Hebrew University of Jerusalem, as well as a prolific writer on Jewish thought and western philosophy. He was known for his outspoken views on ethics, religion, and politics. Leibowitz cautioned that the state of Israel and Zionism had become more sacred than Jewish humanist values and controversially went on to describe Israeli conduct in the occupied Palestinian territories as "Judeo-Nazi" in nature while warning of the dehumanizing effect of the occupation on the victims and the oppressors.
Jewish studies is an academic discipline centered on the study of Jews and Judaism. Jewish studies is interdisciplinary and combines aspects of history, Middle Eastern studies, Asian studies, Oriental studies, religious studies, archeology, sociology, languages, political science, area studies, women's studies, and ethnic studies. Jewish studies as a distinct field is mainly present at colleges and universities in North America.
Gershom Scholem, was a German-born Israeli philosopher and historian. Widely regarded as the founder of modern academic study of the Kabbalah, Scholem was appointed the first professor of Jewish mysticism at Hebrew University of Jerusalem.
Torah Umadda is a worldview in Orthodox Judaism concerning the relationship between the secular world and Judaism, and in particular between secular knowledge and Jewish religious knowledge. The resultant mode of Orthodox Judaism is referred to as Centrist Orthodoxy.
Rabbinic authority in Judaism relates to the theological and communal authority attributed to rabbis and their pronouncements in matters of Jewish law. The extent of rabbinic authority differs by various Jewish groups and denominations throughout history.
Tamar Ross is a professor of Jewish philosophy at Bar-Ilan University and a specialist of religious feminist philosophy.
Hashkafa is the Hebrew term for worldview and guiding philosophy, used almost exclusively within Orthodox Judaism. A hashkafa is a perspective that Orthodox Jews adopt that defines many aspects of their lives. Hashkafa thus plays a crucial role in how these interact with the world around them, and influences individual beliefs about secularity, gender roles, and modernity. In that it guides many practical decisions—where to send children to school, what synagogue to attend, and what community to live in—hashkafa works in conjunction with halakha or Jewish law.
Pinchas Polonsky is a rabbi, Russian-Israeli Jewish-religious philosopher, researcher, and educator active among the Russian-speaking Jewish community. Rabbi Polonsky has written original books and a number of translations of works on Judaism.
Moshe Halbertal is an Israeli philosopher, professor, and writer, a noted expert on Maimonides, and co-author of the Israeli Army Code of Ethics. He currently holds positions as the John and Golda Cohen Professor of Jewish Thought and Philosophy at the Hebrew University of Jerusalem and Gruss Professor of Law at NYU School of Law. In 2021 he was elected to the American Philosophical Society.
Orthodox Jewish philosophy comprises the philosophical and theological teachings of Orthodox Judaism. Though Orthodox Judaism sees itself as the heir of traditional rabbinic Judaism, the present-day movement is thought to have first formed in the late 18th century, mainly in reaction to the Jewish emancipation and the growth of the Haskalah and Reform movements. Orthodox Jewish philosophy concerns itself with interpreting traditional Jewish sources, reconciling the Jewish faith with the changes in the modern world and the movement's relationships with the State of Israel and other Jewish denominations.
