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
Elisabeth Kuyper Heinrich Barth and Leopold Carl Wolff at the Hochschule für Musik, completing her studies there in 1900. In 1901, Kuyper became the first woman to be admitted to study composition at the Meisterschule für Komposition, led by Max Bruch. She was quite productive as a composer during her master classes with Bruch, including creating a violin sonata, a ballad for cello and orchestra, and a serenade for orchestra. Max Bruch became a great champion of and mentor to Kuyper, and they stayed connected even through his very old age. He conducted many of her compositions, recommended her for stipends from