There are again cases when polygamy from every reasonable point of view seems a necessity; in a marriage, for instance, where the wife is insane, or diseased, or childless. And besides these physical reasons there are intellectual reasons. Looking into life one sees men unlike in all things. Perhaps one man is equal in his physical strength to ten average men; another is intellectually a giant among his fellows. In Sanskrit Mana means mind; and the real man is mind. One mind may be equal to a thousand minds. One mind may have innumerable sides, each eager for expression. One mind may be capable of managing innumerable activities, and of supporting innumerable interests.