Every Saturday morning I take my golden retriever, Sadie, for a walk at a park on the edge of the city. It is a quiet time, a time for reflection, for musing, for dreaming. This morning the world was blanketed in a white veil of fog. There was no city view, no vistas of the grandeur of the jagged ridge of the Rockies marching along the western skyline. Sound was softened by the denseness of the air around me and my vision was limited by the marshmallow-like mist of the world surrounding me. It was a magical grey on white landscape of misty hills rolling into nothingness dotted by the stark relief of naked trees holding their ground against the fog swirling around their frost laden …