"I have known not a few men who, after reaching the summits of business success, found themselves miserable on attaining retirement age. They were so exclusively engrossed in their day-to-day affairs that they had no time for friend-making.... They may flatter themselves that their unrelaxing concentration on business constitutes patriotism of the highest order. They may tell themselves that the existing emergency will pass, and that they can then adopt different, more sociable, more friendly habits. [But] such a day is little likely to come for such individuals."