Sue and I were walking on the hills above Hathersage today. A sheepdog, under the guidance of a farmer, was rounding up some sheep and lambs which had strayed into a field beyond the one where the main flock was grazing. I’m always amazed at the energy and alertness of such dogs. They run with immense power, they never stop moving, they turn immediately they hear a whistle, they sit as soon as commanded. For me they embody life at its most ‘aliveness’ – energetic, totally committed but disciplined enough to prevent those they are guiding from panicing.