She sensed that he, too, was putting a brake on himself, but his caution was greater than hers. Francesco eased her away from the subject of work, and made her talk about herself.

‘How did your parents cope with you being blind?’ he asked.

‘Easily. They were both blind, too,’ she explained.

‘Mio Dio! How terrible!’ he said instinctively.

‘Not really. You’d be amazed how little you miss what you’ve never had. Since they couldn’t see, either, and I’m an only child, I had almost no point of comparison. The three of us formed a kind of secret society. It was us against the world because we thought everyone else was crazy. They thought we were crazy, too, because we wouldn’t conform to their ideas about how blind people ought to behave.

‘They met at university, where he was a young professor and she was one of his students. He writes books now, and she does his secretarial work. He says she’s more efficient than any sighted secretary because she knows what to watch out for. They used to say they fell in love because they understood things that nobody else did. So I grew up accepting the way we lived as normal, and I still do.’

There was a slight warning in her voice as she said the last words, but she didn’t make much of the point.

She managed to turn the conversation towards him. He told her about his family in Italy, his parents and his five brothers, the villa perched on the hill with the view over the Bay of Naples. Then he caught himself up, embarrassed.

‘It’s all right,’ she told him. ‘I don’t expect people to censor their speech because I’ve never seen the things they describe. If I did that I wouldn’t have any friends.’

‘And you’ve never seen anything of the world at all,’ he said in wonder. ‘That’s what I can’t get my head round.’

‘Yes, I suppose it is hard,’ she mused. ‘This morning my friend told me you had deep blue eyes, but I had to tell her I couldn’t picture them.’