I was born in Johannesburg, South Africa. My pre-PhD work was done at the Rand Afrikaans University, now the University of Johannesburg. I obtained my PhD from the University of South Africa. When I moved out of Johannesburg, it was to settle in Pretoria, now the City of Tshwane, 60 kilometres north of Johannesburg. I've also lived in Pittsburgh and Wollongong for shorter periods before moving to Sydney in 2003. In 2007 I moved back to Pretoria. I am married to Louise Leenen. We have two sons, Thomas and André.