 In 1958 Anderson retired and in 1962 died at his home in Sydney’s northern suburbs. The Challis Chair of Philosophy was occupied for the next 30 years by Anderson’s students, J. L. Mackie (1959–1963) and D. M. Armstrong (1964–1991). Both philosophers were critical of Anderson’s philosophy and were more engaged with contemporary philosophical debates, but both also acknowledged Anderson’s formative influence on their work.