Sometimes a day at the Hay Festival is like mainlining Ernst Bloch’s Principle of Hope. Already in a receptive mood by listening to a radio interview with Jimmy Wales, the co-founder of Wikipedia. Yuval Noah Harari inspired his audience with visions that used to be found in the sf books of Olaf Stapledon and Dan Simmons. Mick Ebeling restores one’s faith in humanity with his notimpossible projects. Karen Armstrong challenged widespread assumptions about religion and war. A utopian space or a jolly for the middle class – can’t it be both?