There is nothing in which the birds differ more from man than the way in which they can build and yet leave a landscape as it was before. – Robert Lynd, The Blue Lion and Other Essays
Among the notable things about fire is that it also requires oxygen to burn – exactly like its enemy, life. Thereby are life and flames so often compared. – Otto Weininger
Not all chemicals are bad. Without chemicals such as hydrogen and oxygen, for example, there would be no way to make water, a vital ingredient in beer. – Dave Barry
