Early autumn light has a clarity to it that makes everything on which it falls stand out. The lowered angle of the sun causes it to enter our field of vision, and we are dazzled. With the sun at my back, I walked toward the line of trees along the last ridge, and even from a distance, saw the various shades of green and brown as though they were close enough that I could touch them up with a brush. Above them, only a few scattered clouds floated in the prefect blue sky. The day had the look of a drawing, with each feature sharply delineated. When I turned for home, and the lowering sun was in my eyes, everything changed.The shadowed north sides of trees were etched dark against the sun's glare, and the blue of the sky was no longer restful, but bright and aggressive, and tinged with gold. The detail of the world was diminished, and the entire scene became more impressionistic, as it were. Looking toward the light, and looking with the light, are very different things.