PRIVACY AND SOLITUDE. Although one of man's most powerful tendencies, as has already been pointed out, is his desire to be with his fellows, this desire is not unqualified. Just as men can be satiated with too much eating, and irritated by too much inactivity, so men become "fed up" with companionship. The demand for solitude and privacy is thus fundamentally a physiological demand, like the demand for rest. "The world is too much with us," especially the human world. Companionship, even of the most desirable kind, exhausts nervous energy, and may become positively fatiguing and painful. To crave solitude is thus not a sign of man's unsociability, but a sign merely that sociability, like any other human tendency, becomes annoying, if too long or too strenuously indulged. Much of the neurasthenia of city life has been attributed to the continual contact with other people, and the total inability of most city dwellers to secure privacy for any considerable length of time. In some people a lifelong habit of close contact with large numbers of people makes them abnormally gregarious, so that solitude, the normal method of recuperation from companionship, becomes unbearable. Few city dwellers have not felt after a period of isolation in some remote country place the need for the social stimulus of the city. But a normal human life demands a certain proportion of solitude just as much as it demands the companionship of others. With the spread of education and the general enhancement of the sense of personal selfhood and individuality among large numbers of people, the demand for privacy has increased. The modern reader is shocked to discover in the literature of the Elizabethan period the amazing lack of a sense of privacy there exhibited. In contemporary society this sense and the possibility of its satisfaction are variously displayed on different economic and social levels. In the congested life of the tenements it is almost impossible, and many social evils are to be traced to the promiscuous mingling of large families (and sometimes additional boarders) in congested quarters.