D. C. S. Oosthuizen
Daniel Charl Stephanus Oosthuizen (also known as Daantjie Oosthuizen; 15 January 1926 – 4 April 1969) was a South African philosopher, and an early Afrikaner voice against Apartheid. The main direction of his philosophical work lay in the field of epistemology and the philosophy of mind. He was more widely known in South Africa for his moral, political and religious essays, and was described by André Brink as a thorn in the flesh of the establishment. He was a confidant of Beyers Naude, who acknowledged him as having been one of the original group whose discussions and thoughts led to the founding of the Christian Institute of Southern Africa, of which he was both a founder member and a member of the Board of Management. He also contributed to the formation of the University Christian Movement.