Leslie Weatherhead once told a parable of a little boy who fled from a witch who had turned herself into a cat. As the boy ran, he kept glancing fearfully over his shoulder. The first time he looked back, the cat was the size of a calf. The next time he looked, it had grown to the dimensions of an elephant. Then the boy fell, and was unable to go farther. Resolutely he got up and faced the pursuin...