He posed as a righteous Jewish convert for 19 years. Then he wrote a 2,000-page anti-Semitic screed. | Jewish Telegraphic Agency
NEW YORK (JTA) — “Eisenmenger belonged to the class of insects which sucks poison even out of flowers,” the 19th-century Jewish historian Heinrich Graetz wrote.
Graetz was referring to Johann Andreas Eisenmenger, a young 17th-century scholar from Mannheim, Germany, who dedicated some 19 years of his life to mastering the Talmud and presenting himself to the Jewish community as a prospective “ger tzedek,” or righteous convert. He learned Hebrew, Aramaic and even Arabic during his intellectual journey, and read the whole Talmud roughly three times.