Moses Mendelssohn
Moses Mendelssohn in portrait by Anton Graff, 1773
Born	September 6, 1729 Dessau, Principality of Anhalt
Died	January 4, 1786 (aged 56) Berlin, Margraviate of Brandenburg
Religion	Judaism
Era	18th-century philosophy
Region	Western philosophy
School	Haskalah, Enlightenment philosophy
Influences	[show]
Influenced	[show]
Signature

Moses Mendelssohn's glasses, in the Berlin Jewish Museum

Moses Mendelssohn (6 September 1729^[1] – 4 January 1786) was a German Jewish philosopher to whose ideas the Haskalah, the 'Jewish enlightenment' of the eighteenth and nineteenth centuries, is indebted.

Born to a poor Jewish family in Dessau and originally destined for a rabbinical career, Mendelssohn educated himself in German thought and literature and from his writings on philosophy and religion came to be regarded as a leading cultural figure of his time by both Christian and Jewish inhabitants of the Holy Roman Empire. He also established himself as an important figure in the Berlin textile industry, which was the foundation of his family's wealth.

Moses Mendelssohn's descendants include the composers Fanny and Felix Mendelssohn and the founders of the Mendelssohn & Co. banking house.

Youth[edit]

Moses Mendelssohn was born in Dessau. His father's name was Mendel, and it was Moses who adopted the surname Mendelssohn ("Mendel's son"). Moses's son Abraham Mendelssohn wrote in 1829 (to his son Felix Mendelssohn ), "My father felt that the name Moses Ben Mendel Dessau would handicap him in gaining the needed access to those who had the better education at their disposal. Without any fear that his own father would take offense, my father assumed the name Mendelssohn. The change, though a small one, was decisive."^[2]

Mendel was an impoverished scribe — a writer of torah scrolls — and his son Moses in his boyhood developed curvature of the spine. Moses's early education was cared for by his father and by the local rabbi, David Fränkel, who besides teaching him the Bible and Talmud, introduced to him the philosophy ofMaimonides. Fränkel received a call to Berlin in 1743. A few months later Moses followed him.

A refugee Pole, Zamoscz, taught him mathematics, and a young Jewish physician taught him Latin. He was, however, mainly self-taught. He learned to spell and to philosophize at the same time (according to the historian Graetz). With his scanty earnings he bought a Latin copy of John Locke's An Essay Concerning Human Understanding, and mastered it with the aid of a Latin dictionary. He then made the acquaintance of Aaron Solomon Gumperz, who taught him basic French and English. In 1750, a wealthy silk-merchant, Isaac Bernhard, appointed him to teach his children. Mendelssohn soon won the confidence of Bernhard, who made the young student successively his bookkeeper and his partner.

It was possibly Gumperz who introduced Mendelssohn to Gotthold Ephraim Lessing in 1754, who became one of his greatest friends. The story goes that the first time Mendelssohn met Lessing, they played chess; therefore, in Lessing's play Nathan the Wise Nathan and the character Saladin first meet during a game of chess. Lessing had recently produced the drama Die Juden, whose moral was that a Jew can possess nobility of character. This notion was, in the contemporary Berlin ofFrederick the Great, generally ridiculed as untrue. Lessing found in Mendelssohn the realization of his dream. Within a few months, the two became closely intellectually allied. Lessing also brought Mendelssohn to public attention for the first time: Mendelssohn had written an essay attacking Germans' neglect of their native philosophers (principally Gottfried Leibniz), and lent the manuscript to Lessing. Without consulting the author, Lessing published Mendelssohn's Philosophical Conversations (Philosophische Gespräche) anonymously in 1755. In the same year there appeared in Danzig (Gdańsk) an anonymous satire, Pope a Metaphysician(Pope ein Metaphysiker), which turned out to be the joint work of Lessing and Mendelssohn.

Early prominence as philosopher and critic[edit]

Mendelssohn became (1756–1759) the leading spirit of Friedrich Nicolai's important literary undertakings, the Bibliothek and the Literaturbriefe, and ran some risk (which Frederick's good nature mitigated) by criticizing the poems of the King of Prussia. In 1762 he married Fromet Guggenheim, who survived him by twenty-six years. In the year following his marriage Mendelssohn won the prize offered by the Berlin Academy for an essay on the application of mathematical proofs to metaphysics, On Evidence in the Metaphysical Sciences; among the competitors were Thomas Abbt and Immanuel Kant (who came second).^[3] In October 1763 the king granted Mendelssohn, but not his wife or children, the privilege of Protected Jew (Schutzjude)—which assured his right to undisturbed residence in Berlin.^[4]

As a result of his correspondence with Abbt, Mendelssohn resolved to write on the Immortality of the Soul. Materialistic views were at the time rampant and fashionable, and faith in immortality was at a low ebb. At this favourable juncture appeared the Phädon oder über die Unsterblichkeit der Seele (Phädon or On the Immortality of Souls; 1767). Modelled on Plato's dialogue of the same name, Mendelssohn's work possessed some of the charm of its Greek exemplar and impressed the German world with its beauty and lucidity of style. The Phädon was an immediate success, and besides being often reprinted inGerman was speedily translated into nearly all the European languages, including English. The author was hailed as the "German Plato," or the "German Socrates"; royal and other aristocratic friends showered attentions on him, and it was said that "no stranger who came to Berlin failed to pay his personal respects to the German Socrates."

Haskalah (Hebrew: השכלה‎; "enlightenment" or "education" from sekhel "intellect", "mind"), the Jewish Enlightenment, was a movement among European Jews in the 18th–19th centuries that advocated adopting enlightenment values, pressing for better integration into European society, and increasing education in secular studies,Hebrew language, and Jewish history. Haskalah in this sense marked the beginning of the wider engagement of European Jews with the secular world, ultimately resulting in the first Jewish political movements and the struggle for Jewish emancipation. The division of Ashkenazi Jewry into religious movements or denominations, especially in North America and anglophone countries, began historically as a reaction to Haskalah. Leaders of the Haskalah movement were called Maskilim (Hebrew: משכילים).=It was based upon the honorific maskil, meaning "scholar" or "enlightened man," used by Isaac Israeli ben Joseph in the 14th century to refer to his Italian Jewish colleagues.

In a more restricted sense, haskalah can also denote the study of Biblical Hebrew and of the poetical, scientific, and critical parts of Hebrew literature. The term is sometimes used to describe modern critical study of Jewish religious books, such as the Mishnah and Talmud, when used to differentiate these modern modes of study from the methods used by Orthodox Jews.

Haskalah differed from Deism of the European Enlightenment by seeking modernised philosophical and critical revision within Jewish belief, and lifestyle acceptable foremancipation rights.^[1] Rejectionist tendencies within it led to assimilation, motivating establishment of Reform and Neo-Orthodox denominations. Its outreach eastwards opposed resurgent mysticism and traditional scholarship. While early Jewish individuals such as Spinoza^[2] and Salomon Maimon^[3] advocated secular identity, it remained until the late 19th century for secular Jewish ideologies to replace Judaism. In the 20th century Gershom Scholem reestablished the historical significance of Jewish mysticism, dismissed by Haskalah historiography.

Origins in Germany[edit]

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As long as the Jews lived in segregated communities, and as long as all social intercourse with their Gentile neighbors was limited, the rabbi was the most influential member of the Jewish community. In addition to being a religious scholar and "clergy", a rabbi also acted as a civil judge in all cases in which both parties were Jews. Rabbis sometimes had other important administrative powers, together with the community elders. The rabbinate was the highest aim of many Jewish boys, and the study of the Talmud was the means of obtaining that coveted position, or one of many other important communal distinctions. Haskalah followers advocated "coming out of ghetto," not just physically but also mentally and spiritually in order to assimilate among Gentile nations.

The example of Moses Mendelssohn (1729–86), a Prussian Jew, served to lead this movement, which was also shaped by Aaron Halle-Wolfssohn (1754–1835) and Joseph Perl (1773–1839). Mendelssohn's extraordinary success as a popular philosopher and man of letters revealed hitherto unsuspected possibilities of integration and acceptance of Jews among non-Jews. Mendelssohn also provided methods for Jews to enter the general society of Germany. A good knowledge of the German language was necessary to secure entrance into cultured German circles, and an excellent means of acquiring it was provided by Mendelssohn in his German translation of the Torah. This work became a bridge over which ambitious young Jews could pass to the great world of secular knowledge. The Biur, or grammatical commentary, prepared under Mendelssohn's supervision, was designed to counteract the influence of traditional rabbinical methods of exegesis. Together with the translation, it became, as it were, the primer of Haskalah.