Abraham Kuyper as "the physical basis for all higher development" in the Stone Lectures (1898). Harinck argues that "Kuyper was not guided by the cultural racism of his day, but by his Calvinistic creed of human equality". Kuyper's legacy includes a granddaughter, Johtje Vos, who is noted for having sheltered many Jews in her home in the Netherlands from the Nazis. After World War II she moved to New York City. Conversely, Kuyper's son Professor H. H. Kuyper, a supporter of Afrikaner Nationalism and colour racism, was a wartime Nazi collaborator and his grandson joined the Waffen SS and died on the
Abraham Kuyper Party. In this programme he formulated the principle of antithesis, the conflict between the religious (Reformed and Catholics) and non-religious. In 1877, he left parliament because of problems with his health, suffering from overexertion. In 1878, Kuyper returned to politics, he led the petition against a new law on education, which would further disadvantage religious schools. This was an important impetus for the foundation of the Anti-Revolutionary Party (ARP) in 1879, of which Kuyper would be chairman between 1879 and 1905. He would be the undisputed leader of the party between 1879 and 1920. His followers gave him the nickname