Yeshayahu Leibowitz
Yeshayahu Leibowitz | |
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ישעיהו ליבוביץ | |
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Born | |
Died | 18 August 1994 Jerusalem, Israel | (aged 91)
Citizenship | Israeli |
Education | University of Berlin University of Basel |
Occupation(s) | Philosopher, chemist |
Organization | Hebrew University of Jerusalem |
Known for | Jewish philosophy Morality Chemistry History of science Politics Ethics |
Notable work | Encyclopaedia Hebraica |
Spouse | Greta |
Children | 6 |
Relatives | Nechama Leibowitz (sister) René Leibowitz (cousin) Yoram Yovell (grandson) Ilay Ofran (grandson) Hagit Ofran (granddaughter)[1] |
Awards | Israel Prize (1993); declined |
Yeshayahu Leibowitz (Hebrew: ישעיהו ליבוביץ; 29 January 1903 – 18 August 1994) 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, and an editor of Encyclopaedia Hebraica, comprehensive encyclopedia in the Hebrew language. he was known for his outspoken views on politics, religion and Jewish philosophy.
Leibowitz said that the State of Israel and Zionism had become more sacred than Jewish humanist values and described 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.[2] He was referred to as the "prophet of wrath" due to his frequent criticism of Zionism.[3]
Biography
Yeshayahu Leibowitz was born in Riga, Russian Empire (now in Latvia) in 1903, to a religious Zionist family. His father was a lumber trader, and his cousin was a future chess grandmaster Aron Nimzowitsch. In 1919, he studied chemistry and philosophy at the University of Berlin. After completing his doctorate in 1924, he went on to study biochemistry and medicine, receiving an MD in 1934 from the University of Basel.
He immigrated to Mandate Palestine in 1935, and settled in Jerusalem. Leibowitz was married to Greta, with whom he had six children, two of whom died at young ages.[4][5] His son Elia was chairman of the Tel Aviv University astrophysics department, and the longest-serving director of the Wise Observatory.[6] Another son, Uri, was a professor of medicine at Hadassah University Medical Center.[4] His daughter, Yiska, was a district prosecutor.[4]
In the 1949 Knesset election, Leibowitz headed the United List of Religious Workers, which failed to win a seat.
Leibowitz's sister, Nechama Leibowitz, was a world-famous biblical scholar. Leibowitz was active until his last day. He died in his sleep on 18 August 1994.[7] Shamai Leibowitz and Hagit Ofran are among his grandchildren.[8]
Academic and literary career

Leibowitz joined the faculty of mathematics and natural science of the Hebrew University of Jerusalem in 1936. He became a professor of biochemistry in 1941, and was promoted to the position of senior professor of organic chemistry and neurology in 1952. He taught at the Hebrew University for nearly six decades, lecturing in biochemistry, neurophysiology, philosophy, and the history of science.[7]
Leibowitz served as the editor of the Encyclopaedia Hebraica in its early stages. Apart from his innumerable articles and essays, Leibowitz authored a wide range of books on philosophy, human values, Jewish thought, the teachings of Maimonides, and politics. Many of his lectures and discourses, including those given as part of the "Broadcast University" project run by Israeli Army Radio, were subsequently compiled and printed in book form. Leibowitz was a prolific letter writer, and his advice or comment was sought out widely. The first collection of his letters (in Hebrew) was published posthumously.
Philosophy
Religion
Leibowitz was an Orthodox Jew who held controversial views on the subject of halakha, or Jewish law. He wrote that the sole purpose of religious commandments was to obey God, and not to receive any kind of reward in this world or the world to come. He maintained that the reasons for religious commandments were beyond man's understanding, as well as irrelevant, and any attempt to attribute emotional significance to the performance of mitzvot was misguided and akin to idolatry. He believed that Jews should perform mitzvot solely for the sake of worshipping God and that although they could also have incidental benefit to the one performing the mitzvah, it would only be a religiously worthy act as long as the motivation was to worship God. He denied the idea of ethical mitzvot, believing that any mitzvot which set out duties towards others were duties based on a person's position before God rather than their position before their fellow man.[9]
The essence of Leibowitz's religious outlook is that a person's faith is his commitment to obey God, meaning God's commandments, and this has nothing to do with a person's image of God. This must be so because Leibowitz thought that God cannot be described, that God's understanding is not man's understanding, and thus, all the questions asked of God are out of place.[10] Leibowitz claimed that a person's decision to believe in God (in other words: to obey him) defines or describes that person, not God.

Leibowitz viewed God as transcending all reality as humans know it, believing that as an entity God is incomparable to any other form of reality humans can encounter, and is completely separate from the material world. He viewed human history in the natural world as having no divine significance and rejected the idea that God had set out a divine purpose in history or extended some form of providence over humanity. He did not see Torah as an account of historical and scientific truths, but rather as the source of the mitzvot or commandments on how Jews are to serve God. He believed that the stories presented as factual in the Torah were simply using literary forms within the realm of human comprehension to deliver demands on how to worship God, writing that "from the standpoint of religious faith, the Torah and the entirety of Holy Scripture must be conceived as a demand which transcends the range of human cognition - the demand to know God and serve him - a demand conveyed in various forms of human expression: prescriptions, vision, poetry, prayer, thought, and narrative." He believed that the Torah should not be read as a purely factual historical account, that the inclusion of any actual historical information in the Torah would be merely coincidental, and that all descriptions of God intervening in nature and history were not to be seen as factual but rather interpreted in terms of the messages they carry, as his ideas of God's transcendence denied that there could be any such contact between holiness and the world of the profane.[9][11]
One result of this approach is that faith, which is a personal commitment to obey God, cannot be challenged by the usual philosophical problem of evil or by historical events that seemingly contradict a divine presence. When someone told Leibowitz that he stopped believing in God after the Holocaust, Leibowitz answered, "Then you never believed in God".[12] If a person stops believing after an awful event, it shows that he only obeyed God because he thought he understood God's plan, or because he expected to see a reward. But "for Leibowitz, religious belief is not an explanation of life, nature, or history, or a promise of a future in this world or another, but a demand".[13] He viewed the Holocaust as having no Jewish religious significance, as such a belief would contradict his ideas of God having no involvement in human affairs.[9]
He was critical of Reform Judaism, calling it a "historical distortion of the Jewish religion", as well as Kabbalah, seeing them as encouraging people to not perform mitzvot for their own sake but ascribing a stated purpose to them. Reform Judaism teaches the concept of "ethical monotheism" and Judaism as having the mission of being a "light unto the nations" and Kabbalah seeks universal redemption through the performance of mitzvot. This was in contrast to Leibowitz's idea that mitzvot should be performed solely to serve God and not for any other explicit purpose. He rebuked the concept of Tikkun olam, a Kabbalistic idea which remains popular in Reform Judaism as a basis for supporting social justice.[14] Further, he also claimed that placing the State of Israel, Jewish history, and Jewish culture above God was committing Avodah Zara, or idol worship.[15]
In his view, prayer for personal reasons, done for the needs of the person praying, was religiously meaningless and even blasphemy, as it seeks to influence God and sees God as an agent for fulfilling human needs. In his eyes, the only legitimate form of prayer was one done to fulfill commandments without any reference to the needs of the person praying.[16]
Mind–body problem
Leibowitz maintained the idea that Mind-body problem is inherently unsolvable. He argued that humans cannot rationally understand how a mental event causes a physical event or vice versa, nor can they grasp how such events are consistently and synchronously linked without understanding the original cause of this linkage. He aruged that the failure to understand the psychophysical connection reflects a fundamental limitation of human reason and cognition.
Views and opinions
Zionism
Leibowitz considered himself a religious Zionist and was affiliated with the Mizrachi movement. He viewed Zionism as a "historic opportunity for the renewed political independence of the Jewish people to test the values of Jewish heritage against the realities of modern statehood". He looked favorably on a system of law based on halakha.
Following Israeli Declaration of Independence. Leibowitz was disappointed with the way the religious parties compromised with the secular government. In his view, they had prostituted themselves to the government to guard their own brand of religious sectarianism, subordinating religion to the government. He viewed the Chief Rabbinate of Israel as morally corrupt. As a result, he became disillusioned with Zionism as a whole.[17][18]
Following the Qibya massacre in 1953, Leibowitz became increasingly critical of Israeli government policy. He condemned the massacre calling it a moral and political abomination and warned that the use of military force without moral restraint would corrupt the foundations of Israeli society.[19] Leibowitz also argued that such acts betrayed Judaism's ethical legacy and undermined the moral integrity of the nascent state.[20]
In 1956, Leibowitz wrote an article in Haaretz following the initial failure of the authorities to punish the perpetrators of the Kafr Qasim massacre, commenting with sharp irony that, in the name of the justice Israel claims to uphold, one might as well call for the Nuremberg laws to be overturned and the convicted Nazi officials to be exonerated, since they too had only followed orders from their superiors.[21]
In 1966, Leibowitz harshly criticized David Ben-Gurion, claiming that, “he ruled his party and the political life in Israel with total control”. He portrayed Ben-Gurion as deceitful and expansionist. He wrote that although Ben-Gurion publicly stated in the Knesset that he opposed a preemptive war against Egypt, he secretly worked to plan one and later declared an expansion of Israel’s borders, referring to it as “The Third Kingdom of Israel,” extending as far as the island of Tiran. Moreover, he was critical of the nuclear project started during Ben-Gurion’s premiership, saying that it had been established “without the knowledge of the Knesset’s Foreign Affairs and Defense Committee." He wrote that Ben-Gurion and his aides sought to conceal the issue from the Israeli public by suppressing press coverage. Earlier, in 1960, Leibowitz had led the Committee for Denuclearization of the Middle East, alongside the politician Eliezer Livneh.[22]
In an interview with Ma'ariv in January of the following year, following controversy surrounding his claims, Leibowitz said: “I think that [Ben-Gurion] is the biggest catastrophe that ever happened to the Jewish people and the State of Israel.” Ben-Gurion was furious but pretended not to care.[23]
Leibowitz became harshly critical of Israeli policies following the 1982 Lebanon War.[24] He repeatedly called for Israelis to refuse to serve in the occupied territories, and warned that Israel was turning its soldiers into "Judeo-Nazis", writing that if "the law ... can allow the use of torture as a way of getting confessions out of prisoners, then this testifies to a Nazi mentality."[25][26][27] He supported a unilateral Israeli withdrawal from the occupied territories.[28]
Messianism
Leibowitz did not believe in the Messianic Age as traditionally understood: "the profound religious meaning of the messianic idea consists in presenting a goal and a purpose towards which one must strive eternally. The Messiah is essentially he who always will come, he is the eternal future. The Messiah who comes, the Messiah of the present, is inevitably the false Messiah." He viewed the expectations of a literal Messianic Age as blurring the line between "religious faith aimed at the service of God and psychological yearnings for the satisfaction of human aspirations."[29]
Israeli occupation
Leibowitz was among the first Israeli intellectuals to state immediately after the 1967 Six-Day War that if the occupation continued, this would lead to the decline in moral stature.
In a 1968 essay titled "The Territories", Leibowitz warned of a bleak future:
From a social perspective, it will not be long before there are no longer Jewish laborers or farmers. The Arabs will become the working class, while Jews will occupy roles as managers, supervisors, officials, and especially - hard-of-hearing policemen. A state that rules over a hostile population of 1.4 to 2 million foreigners will inevitably become Shin Bet state, with all that this entails for the spirit of education, freedom of speech and thought, and the democratic system. The corruption inherent in every colonial regime will cling to the State of Israel. Its administration will be occupied with suppressing an Arab rebellion on one hand, and with buying off Arab collaborators on the other. There is a real danger that the IDF - which has thus far been a people’s army - will degenerate into an occupying force, and that its commanders, who will become military governors, will resemble their counterparts in other nations.
Following the Mossad assassinations following the Munich massacre, Yeshayahu Leibowitz stated in a public speech at Ben-Gurion University of the Negev: "Whoever condemns the terrorism of the Palestinian organizations must at the same time condemn the terrorism of the Israeli occupation of the West Bank and Gaza".[30] In 1980, Leibowitz delivered another speech in which he addressed various issues related to the Israeli occupation, including Palestinian political violence, which he described as "natural consequence of colonial rule":
the corruption of occupation does not stop with the occupiers - it also deforms the lives of the occupied. Today, virtually every Arab living under Israeli rule, whether in the state or the territories, is - either in practice or in principle—aligned with the PLO. Some may even be driven to acts of terrorism. I cannot bring myself to moral outrage over this fact, because such resistance is a natural consequence of colonial rule. Occupation breeds rebellion; rebellion breeds terrorism; terrorism provokes counter-terrorism; and the cycle continues. Anyone who truly and sincerely opposes this unfolding tragedy, and who fears the devastation it will bring upon both the Israeli-Jewish and Palestinian-Arab peoples, must recognize this: the only way to avert disaster is through the complete and unconditional end of the occupation.
Religion and state
Leibowitz believed in the separation of state and religion, and held that mixing the two corrupted faith. He wrote that: "For Judaism, only God is holy, whereas country, nation, and state lack that status. The state is not a value in itself."[31] He condemned the veneration of Jewish shrines, cynically referring to the Western Wall as the Discotel (a play on the words "discothèque" and "Kotel", a transliterated Hebrew word which literally means "wall", but capitalized refers to the Western Wall).[7][32][16][33][9]
Homosexuality and gender
On the subject of homosexuality, Leibowitz believed that despite the ban on homosexual relations in Judaism, homosexuals should do their best at remaining observant Jews.[34] Leibowitz was also an advocate of increased gender equality in Jewish practice, writing that: "The halakhic decisions in Judaism barring women from public office tell us more about what actually was the case than about what ought to be" and arguing that men and women should study the Torah together.[35]
Awards and recognition
In an interview in Haaretz newspaper, Carlo Strenger, who knew Leibowitz personally, stated:
Because of his provocativeness, it's easy to miss Leibowitz's profound moral seriousness and the great relevance of his thought today. He is often pigeonholed as belonging to the extreme left, which is a mistake. Leibowitz, never willing to bow to collective pressure, was the most unlikely of combinations: On the one hand he was a libertarian, an extreme form of classical liberalism, and believed that human beings should be free to determine their way of life without any state interference. On the other hand, he was an ultra-Orthodox Jew who insisted that the state and religion must be separated completely to avoid corrupting each other.[36]
In 1993, Leibowitz was selected for the Israel Prize for Lifetime Achievement.[37] Before the award ceremony, Leibowitz was invited to speak to the Israel Council for Israeli–Palestinian Peace, where his controversial remarks calling upon Israeli soldiers to refuse orders triggered outrage (and Yitzhak Rabin had threatened to boycott the ceremony). The jury convened to discuss the possibility of withdrawing the prize, but Leibowitz himself announced that he would refuse to accept it, because he did not want to create antagonism when receiving the prize.[37]
References
- ^ "The Zionist still holding a candle for peace and equality". qantara.de. 26 May 2021. Retrieved 17 March 2025.
- ^ "Noam Chomsky Warns of the Rise of 'Judeo-Nazi Tendencies' in Israel". Middle East Monitor. 12 November 2018.
- ^ "Yeshayahu Leibowitz: Prophet of Wrath, Harbinger of the Future". Haaretz.
- ^ a b c Roth, Nurit (3 July 2008). "Confessions of a litigation commando". Haaretz. Retrieved 17 March 2025.
- ^ Maltz, Judy (16 June 2013). "Yeshayahu Leibowitz, Iconoclast Philosopher, and Now - the Movie". Haaretz. Retrieved 17 March 2025.
- ^ "Templeton Research Lectures on the Constructive Engagement of Science and Religion :: Speaker Bios". Archived from the original on 26 May 2008. Retrieved 8 August 2007.
- ^ a b c Greenberg, Joel (19 August 1994). "Yeshayahu Leibowitz, 91, Iconoclastic Israeli Thinker". The New York Times.
- ^ "Yeshayahu Leibowitz's grandson gets 20 months for FBI leak". Ynetnews. 25 May 2010. Retrieved 17 March 2025.
- ^ a b c d Yeshayahu Leibowitz - Stanford Encyclopedia of Philosophy
- ^ Zev Golan, "God, Man, and Nietzsche: A Startling Dialogue between Judaism and Modern Philosophers" (New York: iUniverse, 2008), p. 43
- ^ Leibowitz, Yeshayahu: Judaism, Human Values, and the Jewish State, p. 140
- ^ Zev Golan, Thundering Leibowitz Archived 2 April 2012 at the Wayback Machine, The Jerusalem Post, Sept. 15, 1997
- ^ Golan, God, Man and Nietzsche, p. 89
- ^ "Judaism, Human Values, and the Jewish State, by Yeshayahu Leibowitz". Commentary Magazine. 1 November 1992. Retrieved 3 June 2024.
- ^ Kavon, Eli (22 June 2019). "Yeshayahu Leibowitz: Idol smasher or idol maker?". The Jerusalem Post. Retrieved 17 March 2025.
- ^ a b Kellner, Menachem (19 July 1992). "Can Judaism Survive the State of Israel?". The New York Times. Retrieved 18 March 2025.
- ^ "ישעיהו ליבוביץ - העם, הדת והמדינה". www.leibowitz.co.il. Retrieved 25 May 2025.
- ^ Ivry, Sara (18 October 2023). "Revisiting Yeshayahu Leibowitz". JSTOR Daily. Retrieved 25 May 2025.
- ^ "ישעיהו ליבוביץ - לאחר קיביה". www.leibowitz.co.il. Retrieved 25 May 2025.
- ^ The Israeli Press and the Qibya Operation, Benny Morris, 1996, Journal of Palestine Studies, p. 52
- ^ The Seventh Million, Tom Segev, 1993 English translation (originally 1991), p. 300
- ^ Benn, Aluf (25 November 2023). "Ben Gurion Uncensored: The 'Old Man' We Never Knew". archive.is. Retrieved 18 April 2025.
- ^ Segev, Tom. A State at Any Cost: The Life of David Ben-Gurion. p. 4.
- ^ Yeshayahu Leibowitz - Stanford Encyclopedia of Philosophy
- ^ Hoffman, David (25 January 1993). "Maverick Israeli Professor Gives Up State Prize amid Flap". The Washington Post. Retrieved 4 January 2019.
- ^ Greenberg, Joel (19 August 1994). "Yeshayahu Leibowitz, 91, Iconoclastic Israeli Thinker". The New York Times. Retrieved 4 January 2019.
- ^ Curtius, Mary (19 August 1994). "Yeshayahu Leibowitz; Iconoclastic Israeli Philosopher". Los Angeles Times. Retrieved 4 January 2019.
- ^ Kellner, Menachem (19 July 1992). "Can Judaism Survive the State of Israel?". The New York Times. Retrieved 18 March 2025.
- ^ Leibowitz, Yeshayahu: Judaism, Human Values, and the Jewish State, pp. 70-72
- ^ Kapeliouk, Amnon (Autumn 1986). "Israel, Terrorism, and the PLO". Journal of Palestine Studies. 16 (1): 189. doi:10.2307/2537044. JSTOR 2537044.
- ^ "Yeshayahu Leibowitz". www.jewishvirtuallibrary.org. Retrieved 3 June 2024.
- ^ United List of Religious Workers Israel Democracy Institute
- ^ Yeshayahu Leibowitz (1995) Judaism, Human Values, and the Jewish State. Cambridge, Massachusetts: Harvard University Press.
- ^ Journal of Homosexuality, volume 52, issue 3/4, Gay, Orthodox, and Trembling: The Rise of Jewish Orthodox Gay Consciousness, 1970s–2000s, by Yaakov Ariel
- ^ "ישעיהו ליבוביץ - The Status of Women: Halakhah and Meta-Halakhah". www.leibowitz.co.il. Retrieved 3 June 2024.
- ^ "Yeshayahu Leibowitz: Prophet of Wrath, Harbinger of the Future". Haaretz. 13 March 2013.
- ^ a b Hoffman, David (25 January 1993). "Maverick Israeli Professor Gives Up State Prize amid Flap". The Washington Post. Retrieved 4 January 2019.
External links
- Yeshayahu Leibowitz (Hebrew) Archived 14 April 2005 at the Wayback Machine
- Yeshayahu Leibowitz (English) Archived 23 November 2009 at the Wayback Machine
- 1903 births
- 1994 deaths
- Scientists from Riga
- People from Riga county
- Latvian Jews
- 20th-century Israeli Jews
- Jews from the Russian Empire
- Latvian emigrants to Mandatory Palestine
- Israeli Orthodox Jews
- Israeli people of Latvian-Jewish descent
- Israeli scientists
- Israeli philosophers
- Jewish chemists
- Jewish philosophers
- Jewish scientists
- Philosophers of Judaism
- 20th-century Israeli philosophers
- Humboldt University of Berlin alumni
- Academic staff of the Hebrew University of Jerusalem
- Israel Prize for special contribution to society and the State recipients
- Jewish Israeli activists for Palestinian solidarity
- Israeli activists for Palestinian solidarity