Israel Zangwill (21 January 1864 – 1 August 1926) was a British author at the forefront of cultural Zionism during the 19th century, he was a close associate of Theodor Herzl.n 1908, Zangwill told a London court that he had been naive when he made his 1901 speech and had since realized what is the density of the Arab population, namely twice that of the United States.