Part of the beautiful design...

From Discipline: The Glad Surrender, by Elisabeth Elliot (p.98):

Flying in a small plane over Manitoba's vast farm country one spring evening, I was fascinated by the beauty of the patterns created by the contour plowing. There were stripes in varied shades of earth and greenness, circles and swaths and curves for miles and miles on every side. But the most beautiful designs grew out of the interruptions - a tree here, a pond there, a hill, a rock, a river. The plowman had had to bend the line each time he passd one.

"Lord, [....] these unexpected things will be fashioned into an unexpectedly beautiful design."