In 1786, only 13 years old, he wrote a book in German, Ueber das Wesen der Sekte Chassidim aus ihren eigenen Schriften gezogen, in which he attempted to demonstrate the absurdity of the beliefs and practices of Hasidic rabbis, including Rabbi Nachman of Bratslav and Rabbi Shneur Zalman, founder of what became the Lubavitcher movement. His work was rejected by the imperial censors, who apparently feared that it would create disharmony among Austria's Jewish subjects. It was published in 1816. At the age of 14 he was engaged by his parents, but he continued living in his father's home. He studied Kabala and Hasidut, but his father, who was opposed to these studies, made him a merchant. This deeply affected his opinions regarding various subjects. Perl's satire of the Hasidic movement, Revealer of Secrets, is said to be the first modern novel in Hebrew. It was published in Vienna in 1819 under the pseudonym "Obadiah ben Pethahiah". Structured as an epistolary novel, it is currently in print only in an Englishtranslation, by Dov Taylor, published by Westview Press. It is an unusual book in that it satirizes the language and style of early Hasidic rabbis writing in Hebrew, which was not the vernacular of the Jews of its time. To make his work available and accessible to his contemporaries, Perl translated his own work into Yiddish. A subsequent parody of Hasidic writings, Words of the Righteous, written with Isaac Baer Levinsohn and published in 1830, is available in Hebrew.
Educator
According to Dov Taylor, in his introduction to his English translation of Revealer of Secrets, Perl denounced Hasidism not only in his writing but in memoranda to representatives of the Austrian Empire. On March 22, 1838, Perl wrote a letter suggesting that the governmentcensor Jewish libraries, prohibit meetings in Jewish ritual baths and close traditional Jewish schools, which he called "a place of refuge for vagabonds, thieves . . . a nest of demoralization and of . . . nefarious, scandalous deeds." In certain memoranda written in later years Perl went so far as to attack particular Hasidic rebbes by name. As an educator, he was a founder of the Deutsch-Israelitische Hauptschule, a school for Jewish children which taught secular subjects such as history, geography, mathematics, and natural science in German, in addition to the Bible and Talmud.
Death
Joseph Perl, who ridiculed the ecstatic dancing and singing of the Hasidim, died on Simchat Torah, a holy day traditionally — and currently — celebrated by song, dance and a processional through the streetscarryingTorah scrolls, so the Galician Hasidim did not miss the opportunity to dance on Perl's fresh grave immediately after his burial.