‘Comrades,’ Jim Callaghan told the Labour Party Conference in his first speech as leader in 1976, ‘there is a line of poetry which is a good line for socialists, even if it was not intended to be: “A man’s reach should exceed his grasp/Or what’s a Heaven for?”’ He was quoting Browning’s ‘Andrea del Sarto’. A line of poetry intended to be good for socialists might have been found in Brecht, but Browning would be more familiar, and less alienating, to the wider audience beyond the party.