[2] His parents, Konstantinos and Elpiniki Tasioulas, migrated to Australia from Dasyllio in the Grevena region of Greece.
He completed undergraduate degrees in Philosophy and Law at the University of Melbourne and was the 1989 Rhodes Scholar for Victoria.
[3] Studying at Balliol College, he received a doctorate (D.Phil in Philosophy) from Oxford University for a thesis on moral relativism which was supervised by Joseph Raz.
Among other writings in this area, Tasioulas is the author of two reports on minimum core obligations, and their bearing on the human right to health, for the World Bank.
He has written on a range of other topics including moral relativism, games and play, the ethics of robots and Artificial Intelligence, and the philosophy of international law.