[...] its small squares of fast-passing light, the early evening windows of the lives of hundreds of others.

The thing about trees is that they know what to do. When a leaf loses its colour, it's not because its time is up and it's dying, it's because the tree is taking back into itself the nutrients the leaf's been holding in reserve for it, out there on the twig, and why leaves change colour in autumn is because the tree is preparing for winter, it's filling itself with its own stored health so it can withstand the season. Then, clever tree, it literally pushes the used leaf off with the growth that's coming behind it. But because that growth has to protect itself through winter too, the tree fills the little wound in its branch or twig where the leaf was with a protective corky stuff which seals it against cold and bacteria.

Otherwise every leaf lost would be an open wound on a tree and a single tree would be covered in thousands of little wounds.

Clever trees.

Then I wondered why on earth would anyone ever stand in the world as if standing in the cornucopic middle of the Hanging Gardens of Babylon but inside a tiny white-painted rectangle about the size of a single space in a car park, refusing to come out of it, and all around her or him the whole world, beautiful, various, waiting?

A game one of my sisters will play with me in my first year of being alive is called Good Baby, Bad Baby. This consists of being told I am a good baby until I smile and laugh, then being told I am a bad baby until I burst into tears. This training will stand me in good stead all through my life.

How could 30 years be the blink-of-the-eye it felt? It was the difference between black-and-white footage of the Second World War and David Bowie on 'Top of the Pops' singing 'Life on Mars.'

I hate to be waiting all my life. Just tell me.