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Aeon is a registered charity committed to the spread of knowledge and a cosmopolitan worldview. Our mission is to create a sanctuary online for serious thinking.

No ads, no paywall, no clickbait – just thought-provoking ideas from the world’s leading thinkers, free to all. But we can’t do it without you.

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Ian Tyrrell
Emeritus Professor of History, School of Humanities and Languages, University of New South Wales

Ian Tyrrell is emeritus professor of history at the University of New South Wales in Sydney, Australia. His latest book is Crisis of the Wasteful Nation: Empire and Conservation in Theodore Roosevelt’s America (2015).

Written by Ian Tyrrell