Sometimes you stumble across a thought you scribbled years ago, or a photo stashed away in a file – and seeing it again, you realise you only half-understood it at the time. Suddenly now, you see its real significance.

Google helpfully reminded me this morning of a photo I took 6 years ago, when Lena’s Alzheimers was just a faint whisper in my ear.

This is what we want, Lena and I and millions of people with dementia and their carers – and all those who feel shut in and enclosed by age and illness. They want to escape the barrier, to spread their wings again and fly back to that place in the sunshine where they know they belong. They want freedom.

The picture says it better than the words.