Welcome to the fourth day of the Guardian Hay Festival.
This morning
11.30am Guardian Stage
The inaugural John Maddox Lecture at Hay.
Martin Rees, the Astronomer Royal celebrates the 400th Anniversary of Galileo’s telescope and the Darwin bicentenary as part of the Cambridge 800 series.
Coming up later – don’t miss it
5.30pm Guardian Stage
Luis Moreno Ocampo, Prosecutor of the International Criminal Court in the Hague talks to Philippe Sands.
Hay Fever Event of the day
4pm Sony screen
Multi-award winning Australian illustrator and writer Shaun
Tan discusses The Arrival and his forthcoming projects with Pixar.
Tomorrow morning
11.30am Barclays Wealth Pavilion
Niall Ferguson offers a Financial History of the World.
Coming up later in the week
Don’t miss Ruth Padel, the new Oxford Professor of Poetry on Tuesday 26th May and The new poet laureate Carol Ann Duffy on Thursday 28 May.
Quote of the day
"If we don't now uproot this problem of global imbalances, we will every few years undergo yet another global economic crisis. And each time, the world's economic centre of gravity will lurch another 1,000 km eastwards. Sometime in the future the last crisis will occur. It will see those great economic powers today running large deficits reduced to smaller, less powerful economies. And of those countries a future IMF will be mouthing 'structural reform' and demanding changes in their' financial systems and profligate borrowing habits." Danny Quah, Professor of Economics, LSE