Megan Nolan on the allure of New York and the city's 'main character' syndrome.

The city is, she says, 'the place that makes me happier to be alive than anywhere else - not in spite but because of its thoroughly human hopelessness.'

'Nature is nature, permanent and without moral taint,' writes Megan, 'but cities are paeans to the marvellous filth of the human spirit.'

'The real challenge is being moved by the effort to remain open to one another despite being consoled by surroundings made not of beauty and relief, but of cement and strife.'

Producer: Adele Armstrong