Schwarz was described by the University of Stellenbosch as "one of the conceptual and moral fathers of the new South Africa" in the sense that he had not only been one of apartheid's most prominent opponents, but his ideas and the initiatives he had taken had played a key role in the development of the concept of a negotiated democracy in South Africa, based on the principles of freedom and justice. Nelson Mandela, a friend of his whom he visited while in prison, described him as a "champion of the poor".