“
How is a cloud outlined? Granted whatever you choose to ask, concerning its material, or its aspect, its loftiness and luminousness,—how of its limitation? What hews it into a heap, or spins it into a web? Cold is usually shapeless, I suppose, extending over large spaces equally, or with gradual diminution. You cannot have, in the open air, angles, and wedges, and coils, and cliffs of cold. Yet the vapor stops suddenly, sharp and steep as a rock, or thrusts itself across the gates of heaven in likeness of a brazen bar; or braids itself in and out, and across and across, like a tissue of tapestry; or falls into ripples, like sand; or into waving shreds and tongues, as fire. On what anvils and wheels is the vapor pointed, twisted, hammered, whirled, as the potter’s clay? By what hands is the incense of the sea built up into domes of marble?
”
”
John Ruskin (Modern Painters: Volume 5. Of Leaf Beauty. Of Cloud Beauty. Of Ideas of Relation)