Taken all in all, the sky is a miraculous achievement. It works, and for what it is designed to accomplish it is as infallible as anything in nature. I doubt whether any of us could think of a way to improve on it, beyond maybe shifting a local cloud from here to there on occasion.

The Lives of a Cell: Notes of a Biology Watcher, The World's Biggest Membrane (p. 148), The Viking Press. 1974