the dominant school in the Netherlands. In philosophy Vollenhoven sought the reconciliation of thought and being, mediated theistically, with the priority given to being. In about mid-1922 this was radicalized: knowing (and thought) is a part of being. Neo-Kantianism, contrariwise, took its departure from thought and justified this in humanistic fashion. In other words, Vollenhoven rowed against the main current of his time. His many commitments and interests led to his becoming overworked. In (mid-)January 1923 he suffered a mental collapse, the recuperation took up most of that year. Vollenhoven and Dooyeweerd In the meantime Vollenhoven's brother-in-law, chess mate, and former study chum Herman Dooyeweerd became active in philosophy. He visited Vollenhoven in Oostkapelle to discuss how he might work his way into philosophy more methodically. When both lived in The Hague, their discussions became more intense and searching, and an enduring partnership in philosophy developed that lasted a life-time. Yet their personalities were very different: Vollenhoven, with his analytical disposition, was the organizer, systematic thinker, and man of detailed historical overviews; Dooyeweerd, with his musical talent (he was a fine pianist), was a jurist by training, who sought the grand design. Vollenhoven had worked his way into the problems of mathematics, the natural sciences, biology, psychology, epistemology, and theology, while Dooyeweerd had a good command of sociology, economics, and jurisprudence. From the end of 1923 on, both advanced a “reformed philosophy” (what they referred to as “Calvinistic philosophy,” now usually called Reformational philosophy). They were simultaneously appointed to university chairs at the Vrije Universiteit of Amsterdam in 1926, Dooyeweerd in the Juridical Faculty, Vollenhoven in the Faculty of Arts and Philosophy as the successor of Geesink. As professor, Vollenhoven was exacting but also exploratory and eager to pursue new avenues. Towards his students he was pastorally mild and sympathetic, which won him popularity and respect. In 1929 he became president of the university's alumni organization and in 1930 an honorary member of the student fraternity. Also in 1930 the Calvinistic Student Movement (in Dutch: CSB) was formed, which often called on Vollenhoven for advice and invited him as speaker. From about this time more intense contact took place with Klaas Schilder. Schilder was a Reformed theologian, who played a dominant role in the split in the Reformed Churches in the Netherlands in 1944, a development much lamented by Vollenhoven. A new anthropology After his illness in 1923, Vollenhoven began