Most of the time I am sunk in thought, but at some point on...

Most of the time I am sunk in thought, but at some point on each walk there comes a moment when I look up and notice, with a kind of first-time astonishment, the amazing complex delicacy of the words, the casual ease with which elemental things come together to form a composition that is—whatever the season, wherever I put my besotted gaze—perfect.