““We found ourselves on a smooth, spacious but narrow track of ice or glass. We floated along it, as if on marvellous skates, and we were dancing too, for like a wave the track rose and fell beneath us. It was delightful. I had never seen anything like it and I shouted for joy, ‘How glorious!’ And overhead the stars were shimmering, in a sky that was strangely all pale blue and yet dark, and the moon with its unearthly light was shining down on us skaters. ‘This is freedom,’ said the instructress, ‘it’s something very wintry, and cannot be borne for long. One must always keep moving, as we are doing here, one must dance in freedom. It is cold and beautiful. Never fall in love with it. That would only make you sad afterwards, for one can only be in the realm of freedom for a moment, no longer. Look how the wonderful track we are floating on is slowly melting away. Now you can watch freedom dying, if you open your eyes...””