The Vilna Gaon attained an extraordinary and undisputed status during his lifetime. Among the general non-Hasidic public, his standing was considered exceptional. He was perceived as belonging to the ranks of the
Tannaim and
Amoraim, the sages of the
Talmud, or as akin to the
Geonim of
Lower Mesopotamia.
Avrohom Yeshaya Karelitz wrote: Due to this reverence, he was referred to by
Litvaks simply as "the Gaon." in Vilnius at the site where the Vilna Gaon's house once stood, inscribed: "The Gaon Eliyahu of Vilna lived in the house that stood here." The Vilna Gaon advocated for a study approach focused on the
peshat (literal meaning) and was himself widely knowledgeable and erudite. His in-law, the author of
Chayei Adam, wrote, "The entire Torah was laid out before him like a set table, so that if he was asked about any matter, he would answer instantaneously." He opposed
pilpul (sharp dialectical analysis) in learning like
Maimonides,
Judah Loew ben Bezalel,
Abraham Isaac Kook, and other sages. In his small study hall, students learned Talmud with the commentaries of
Rashi,
Asher ben Jehiel, and
Isaac Alfasi, in a straightforward manner aimed at reaching halachic conclusions. The Vilna Gaon was highly original in his halachic rulings. He often ruled according to his own understanding of the Talmud, even against the Rishonim and the Shulchan Aruch, or in opposition to established minhag. His learning was grounded in a deep pursuit of the literal meaning of the sources, as well as in textual emendations, particularly in less commonly studied works such as the Jerusalem Talmud, the
Tosefta, and the
Zohar. Despite his historical significance to the Misnagdim, the method of study practiced in contemporary
litvak yeshivas differs significantly from his approach. Most of his textual emendations were not based on manuscript evidence available to him but rather on his exceptional mastery of rabbinic and Talmudic literature. In retrospect, many of his emendations have been found to align with accurate textual witnesses. On the evening following
Yom Kippur, the Vilna Gaon would continue fasting for several more hours while studying Torah. He did this based on the teaching of the
Chazel: In other words, the world's existence depends on uninterrupted Torah study. Since, on the night after Yom Kippur, everyone went home to eat, the Vilna Gaon would continue learning until people finished their meals and returned to study. This idea also served as the foundation of
Volozhin Yeshiva, established by his disciple,
Chaim of Volozhin.
Kabbalah in his teachings By the age of nine, the Vilna Gaon knew all of Tanach and
Shas with commentaries, and had already begun studying Kabbalah. The Gaon wrote commentaries on the
Sifra de-Tzeniuta, which he regarded as the foundational work of Kabbalah, as well as on
Tikkunei Zohar,
Tikkunei Zohar Chadash, and other sections of the
Zohar and the
Sefer Yetzirah. However, unlike other Kabbalists, the Gaon opposed the reception of
maggidic revelations, preferring to engage in Torah study and receive divine wisdom directly from God rather than through intermediaries. He also sent his disciple, Chaim of Volozhin, to warn his brother, Shlomo Zalman of Volozhin, not to accept a maggid that was destined to appear to him, explaining that the maggidim of that generation, particularly outside the Land of Israel, "could not possibly be entirely sacred and free of any impurity." The teachings of the Vilna Gaon in Kabbalah are considered a distinct stream (although they are sometimes integrated with the teachings of
Ramchal). Many Kabbalists have studied and interpreted them, such as his disciples Chaim of Volozhin in his book
Nefesh HaChaim, Moshe of Tolchin, Menachem Mendel of Shklov, and the disciples of his disciples, Yitzhak Isaac Chever,
David Luria, Avraham Simcha of Amchislav, Elijah of Kalish, as well as
Shlomo Elyashiv in the
Leshem Shevo VeAchlamah,
Naftali Herz Halevy of
Jaffa, and others. The writings of the Vilna Gaon have been studied in the present day by
Yitzhak Shlomo Zilberman, Sraya Dublitzky, Israel Eliyahu Winterob,
Yaakov Edes (
Divrei Yaakov), and Yosef Avivi, who also wrote a book explaining the uniqueness of the Vilna Gaon's Kabbalah and the differences between it and the Kabbalah of Isaac Luria. During the struggle between the
Hasidim and the Misnagdim, the Hasidim spread a rumor that the Vilna Gaon did not believe in the teachings of Kabbalah and did not read the
Zohar or the writings of Isaac Luria. By doing so, they sought to undermined the Gaon's opposition to Hasidism. The Vilna Gaon's disciple, Rabbi
Chaim of Volozhin, in his introduction to the Vilna Gaon's commentary on Sifra D’Tzeniuta, sharply criticizes those who spread the rumor, with the following words:
The teachings of redemption in his doctrine According to the book
Kol HaTor, which some attribute to
Hillel Rivlin of
Shklov, in 1740 (the Hebrew year 5500), the Gaon began his public engagement with Kabbalah. According to his views on the
Redemption, the year 5500 marks the beginning of the
"sixth day" of the world, in which preparations should be made for Shabbat, when the complete redemption will come. This calculation is based on the Talmud,
Sanhedrin 38b, which states that the world will exist for six thousand years. The Gaon considered each millennium as a day, based on the verse "For a thousand years in Your eyes are but as yesterday when it passes" in
Psalm 90, 4, meaning that the year 5500 is the morning of the sixth day. Just as the halakhah requires early rising on Friday to prepare for the Shabbat, so, according to the Gaon's words, one should prepare for the Shabbat of the world starting from the "morning of the sixth day." The authenticity of
Kol Hator is disputed by some historians, notably
Immanuel Etkes in
The Invention of a Tradition: The Messianic Zionism of the Gaon of Vilna, where he argues that the text is a fabrication intended to promote a messianic-Zionist ideology.
A new Shulchan Aruch According to what was written by the Gaon's son, the Gaon intended to compose a new version of the
Shulchan Aruch:
His attitude towards secular studies and philosophy , translated at the Gaon's encouragement The Gaon supported secular studies, including
natural science, and even wrote a book on mathematics,
astronomy, and
geometry titled
Ayil Meshulash. In the introduction to the translation of
Euclid's Elements (translated into Hebrew by Baruch Shklov in
The Hague in 1780), it is quoted in his name: The words of Baruch Shik are supported by a translation written by the Vilna Gaon's son, Avraham Vilner, of parts of the
Natural History by the radical French scientist
Georges-Louis Leclerc, Comte de Buffon. According to the testimony of his disciples and the books written in his name, the Gaon was knowledgeable in mathematics, engineering,
biology,
astronomy, geography,
linguistics, and music, but he refrained from engaging in
pharmacy based on his father's instructions. He also studied human philosophy but opposed the study of the
humanities in general because he did not see them as having intrinsic value for Jewish life. The Gaon distinguished between the humanities and the natural sciences, which he regarded as "pharmacology and medicine" that assist in understanding the Torah. Yisrael Shklov recounts the Gaon's teachings: In contrast to his view on natural sciences, he strongly opposed philosophy and its practitioners, as stated in the
Even Shlomo, a compilation of his writings, in chapter 11, section 4. "Blessed are those who distance themselves from those who engage in the study of divine, logical, and natural philosophy. They will merit, in the future, to the light of God (Isaiah 2:6)." A footnote said: In his commentary on the Book of Isaiah, chapter 2, verse 6, the Vilna Gaon offers a mystical interpretation of the verse. He reads the text as a hidden praise of those who separate themselves from corrupt influences in pursuit of divine truth: In this commentary, the Gaon suggests that separating from a society fixated on astrology, foreign wisdoms, and misapplied spiritual traditions can elevate a person spiritually. Rather than interpreting the verse as divine abandonment, he reads it as a description of the righteous individual’s inner journey away from external confusion and toward divine truth. The Vilna Gaon's commentary on
Yoreh De'ah, section 319, subsection 6, small subsection 13: Some saw his favorable attitude towards secular studies as the reason for the spread of the
Haskala in Lithuania more than in Hasidic Poland. This claim was refuted in later research. ==Attempt to make Aliyah to the Land of Israel==