Man is an inseparable part of nature. But does this make him natural? Let us try another analogy: nature is a fertile mother giving us our food and drink. But, and this is the snag, it can also contain terrible forces of destruction; it can suddenly break loose in devastating earthquakes, murderous typhoons and floods. Like woman, that other mysterious force liable to erupt in frightful passions, nature must be tamed, or at least controlled.