Sir – The late, greatly loved councillor and Lord Mayor, Maureen Christian, strove valiantly for many years to establish a new, capacious concert hall on the Oxpens car park adjacent to the Oxford and Cherwell Valley college.

But, like the mythical Sisyphus, who repeatedly rolled a stone up a hill only to see it fall down again, she was frustrated at every turn. Yet she remained cheerfully undaunted, with her characteristic spirited north country grit. What a wonderful exemplar she is as this great project (Revealed: fresh plans for concert hall in city, September 6) proceeds!

Geoffrey Hinton, Oxford