Perhaps the saddest thing about life is that certain moments only happen once. There you are suddenly radiant with life, aglow with blessings and everything in the world is phosphorescent with accessible energy. And then, in the skip of a heart, that time is past, is a letter in a shoebox, a stain on a sheet. But then again you also realise that the concept of once is a primary source of the sustaining beauty life has. Of all the arts it’s dance that probably expresses most eloquently and poignantly the transient nature of life’s moments of grace. And this is why everyone should go and see Wim Wenders’ film about Pina Bausch. Twice I was lucky to see her dance company perform and both times it was like being stripped naked and daubed in mud and pollen by the girl with the most beautiful hands.