David Hockney on 'the Pleasure of Looking'

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"It was about the pleasure of looking," says David Hockney on a new work for his exhibition in the Artist's Eye series at the National Gallery, London. Joseph Mydell discusses his one-man show about Paul Laurence Dunbar, 19th-century black American poet, Lyrics of the Hearthside at the Arts Theatre in London. Ronald Clark, author of Bertrand Russell and His World, talks about the much-married mathematician, philospher and CND campaigner. Review of the film Excalibur, directed by John Boorman. Presenter: Humphrey Carpenter.