Artist Richard Long, Stella Duffy chooses her Queer Icon, Daljit Nagra on Liu Xiaobo

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It's 50 years this summer since the artist Richard Long took steps across a Wiltshire field to create A Line Made By Walking, now regarded as a classic piece of conceptual art. John meets him in a rare interview in his studio near Bristol. Theatre director Marcus Romer and former arts funder and marketing consultant Roger Tomlinson discuss the holy grail of arts funding bodies: how to measure the quality of art that the public is paying for. For our Queer Icons series, Stella Duffy champions the novel Carol, Patricia Highsmith's love story set in fifties New York. And Radio 4's Poet in Residence, Daljit Nagra, comes in to tell us about the poetry of Chinese dissident and Nobel Peace laureate Liu Xiaobo, who died earlier this month. Presenter: John Wilson Producer: Sarah Johnson.