Michael Sandel teaches political philosophy at Harvard University, where he is the Anne T. and Robert M. Bass Professor of Government Theory. His course “Justice” is the first Harvard course to be made freely available online and on television and has been viewed by tens of millions of people around the world.

Full transcript available at: josephnoelwalker.com/michael-sandel

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Graham Allison is an American political scientist and the Douglas Dillon Professor of Government Harvard University.

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Niall Ferguson is one of the world's most renowned historians. He is the Milbank Family Senior Fellow at the Hoover Institution, Stanford University, and a senior faculty fellow of the Belfer Center for Science and International Affairs at Harvard. He is the author of sixteen books, including most recently Doom: The Politics of Catastrophe.

Full transcript available at: josephnoelwalker.com/niall-ferguson

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John Hewson is a former Australian politician and was leader of the Liberal Party from 1990 to 1994.

Full transcript available at: josephnoelwalker.com/john-hewson

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John Kay is one of Britain's leading economists.

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John Horgan is a science journalist and Director of the Center for Science Writings at the Stevens Institute of Technology, Hoboken, New Jersey. He was senior writer at Scientific American from 1986-1997 and is the author of the bestselling book The End of Science.

Full transcript available at: josephnoelwalker.com/horgan

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Graeme Davison is Australia's most eminent urban historian.

Full transcript available at: josephnoelwalker.com/graeme-davison

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Cheryl Misak is a Canadian philosopher and the author of Frank Ramsey: A Sheer Excess of Powers.

Full transcript available at: josephnoelwalker.com/misak

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Malcolm Turnbull was the 29th Prime Minister of Australia.

Full transcript available at: josephnoelwalker.com/malcolm-turnbull

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Andy Lee is one half of iconic Australian comedy duo Hamish & Andy.

Full transcript available at: josephnoelwalker.com/andy-lee

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