Before the days of central heating I can remember as a child lying on my stomach and gazing into the fire, watching the coals shift and crumble, creating marvellous fairytale vistas of palaces and mountain ranges.
In the summer the fire went out, but the clouds were there instead.
Lying on our backs in the park it was easy for me and my friends to recreate the same stunning landscapes, but this time with cloud formations. They too shifted and drifted, taking on the forms of plants and animals, Jesus, a space ship, that bloke I fancied in our road.
Then I grew up...