David Marr on corruption, truth-telling and big lives.
Sisonke Msimang on exile and home, hatred and belonging.
You can find out more about Sisonke, her recent book Always Another Country, and her other writing here.
Ben Pronk on SAS leadership, elite fitness and why specialisation is for insects.
Louise Taylor on Justice and Aboriginal Identity.
Oz Harvest founder Ronni Kahn on kibbutz life, gratitude and the colour yellow
(Photo by Anthony Geernaert)