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Levi ben Gershon ("Levi son of Gerson"), better called Gersonides or even a Ralbag (1288-1344), was a famed rabbi, philosopher, mathematician and Talmudic commentator. He was natural at Bagnols in Languedoc, France.

Biography
When in the example of the more medieval Jewish philosophers little is known of his life. His personal experienced been distinguished for piousness & exegetic skill within Talmud, however though he was known in the Jewish community by comment in certain books of the Bible, he never seems to have accepted any rabbinic post. Even a freedom of his opinions could keep around put obstacles in the way of his preferment. He is known to keep close at hand been at Avignon & Orange during his life, and is believed to stand died around 1344, though Zacuto asserts that he died at Perpignan in 1370.

Works

Philosophical and religious works
Section of his writings consist of comment on the portions of Aristotle then known, or like of comment on the comment of Averroes. Occasionally one come printed in the early Latin editions of Aristotle’s works. His first treatise, that by which he has the place in the history of philosophy, is entitled Milhamot Adonai, ("The Wars of God"), & occupied xii years inside composition (1317—1329). The part of it, containing an elaborate survey of astronomy as known to the Arabs, was translated into Latin in 1342 at a asking of Pope Clement VI.

A Milhamot is throughout sculptural when a project of a outstanding act of Jewish philosophy, the Suggestion of the Perplexed of Maimonides, and can be esteem an elaborate criticism from either a extra philosophic point of learn from (in the main Averroistic) of the syncretism of Aristotelianism and Jewish orthodoxy as presented in this function. A sextet books read: Deuce. prophecy; Triplet. & Quatern. God's noesis of information & providence, where is advanced a curious theory that God doesn't underst& single information, and that, when there exists general providence for tons, favorite providence simply reach victims whose cause has been enlightened; Gersonides was as well andy skinner of the comment on the Pentateuch & other exegetic and scientific works.

Views on God and omnipotence
Inside counterpoint to the theology held by Orthodox Judaism, Gersonides held with victims world health organization denied God's omnipotence. "Gersonides, bothered by the old question of how God's foreknowledge is compatible with human freedom, holds that what God knows beforehand is all the choices open to each individual. God does not know, however, which choice the individual, in his freedom, will make." (Louis Jacobs, God, Torah, Israel: Traditionalism forgoing Fundamentalism)

A second definitive Jewish exponent of limited theism was Abraham ibn Daud. "Whereas the earlier Jewish philosophers extended the omniscience of God to include the free acts of man, and had argued that human freedom of decision was not affected by God's foreknowledge of its results, Ibn Daud, evidently following Alexander of Aphrodisias, excludes human action from divine foreknowledge. God, he holds, limited his omniscience even as He limited His omnipotence in regard to human acts". (Philosophies of Judaism, Julius Guttman, JPS, 1964. P.150, 151)

View farther discussion within Free will In Jewish thought.

Views of the afterlife
Gersonides posits that population's mortals come composed of deuce arethe: a lesson, or even even human being, intellect; & an acquired, or professional, intellect.. a material intellect is inherent around each individual, & gives population the capacity to read & see. This page intellect is individual, & dies by having a system. Even so, he as well posits that a soul besides has an acquired intellect. This lives demise, & may contain a accumulated noesis that a individual acquired in the period of their life-time. For Gersonides, Seymour Feldman points retired, "Man is immortal insofar as he attains the intellectual perfection that is open to him. This means that man becomes immortal only if and to the extent that he acquires knowledge of what he can in principle know, e.g. mathematics and the natural sciences. This knowledge survives his bodily death and constitutes his immortality." (Gersonides, Trans. Seymour Feldman Wars of the Lord, Book One, p. 81, JPS, 1984)

Works in mathematics and astronomy
Gersonides wrote Book of Counts around 1321 dealing with arithmetic operations, including extraction of roots. Too, within 1342, he wrote On Sines, Chords and Arcs, which examined trigonometry, in particular proving a sine theorem for plane triangles and generating 5 figure sine tables.

1 season late, at a asking of the bishop of Meaux, he wrote The Harmony of Statistics which occurs as comment on the number 1 5 books of Euclid.

He as well invented Jacob's staff, an instrument to measure the angular distance between celestial objects. These are described when consisting Levi found the solar eclipse in 1337. When he experienced found this event he proposed the fresh theory of the sun which he proceeded to line 2 text by farther observations. A second occultation found by Levi was a occultation of the Moon around 3 October 1335. He described the geometric model for the motion of the Moon & processed more astronomic observations of the Moon, Sun & planets utilizing the camera obscura.

Occasionally of his beliefs were swell wide of a truth, like his belief that the Milky Way was on the sphere of the fixed stars and refulgency per reflected weak of the Sun.

Bibliography
"Gersonides". A Encyclopedia Judaica. Keter Publication. Eisen, Robert (1995). Gersonides around Providence, Covenant, & The Chosen Population: A Survey in Mediaeval Jewish Philosophy & Biblical Comment. State University of Just released York. Guttman, Julius (1964). Philosophies of Judaism, p.214/215. JPS. Feldman, Seymour. A Wars of the Lord (Triplet volumes). Jewish Publication Society.

Levi ben Gershon
Article on this medieval philosopher and astronomer, from the Jewish Encyclopedia.

Gersonides
Article by Tamar Rudovsky from the Stanford Encyclopedia of Philosophy. Provides a bibliography, in addition to discussions of this philosopher's life, work and doctrine of astrological determinism.

Wikipedia: Gersonides
Article from this openly-edited encyclopedia.

Bibliographia Gersonideana
Annotated bibliography of primary and secondary sources on this medieval Jewish thinker, compiled by Menachem Kellner.

Levi ben Gerson
Biographical article with links and bibliography, from the MacTutor History of Mathematics.

FOLDOC: Gersonides Levi ben Gershom
Brief entry and recommended reading from this philosophical database.


Society: Philosophy: History of Philosophy: Medieval
Society: Philosophy: Philosophers: A: Averroes
Society: Philosophy: Philosophy of Religion
Society: Religion and Spirituality: Judaism





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