After the sureties of youth there sets in a period of intense and intolerable complexity. With the soda-jerker this period is so short as to be almost negligible. Men higher in the scale hold out longer in the attempt to preserve the ultimate niceties of relationship, to retain "impractical" ideas of integrity. But by the late twenties the business has grown too intricate, and what has hitherto been imminent and confusing has become gradually remote and dim. Routine comes down like twilight on a harsh landscape, softening it until it is tolerable.