"That," he goes on, "is the way to develop enough physical overplus so that you will be enabled to overcome your present sad addiction to mob-intoxication. And, provided your mind is not in as bad condition as your body, this physical overplus will transmute some of itself into mental exuberance. This will enable you to have more fun with your mind than an enthusiastic kitten has with its tail. It will enable you to look before and after, and purr over what is, as well as to discern, with pleasurable longing, what is not, and set forth confidently to capture it." But if, by any chance, you have allowed your mind to get into the sort of condition which the old-fashioned German scholar used to allow his body to get into, it develops that the Auto-Comrade hates a flabby brain almost as much as he hates a flabby body. He soon makes it clear that he will not have much to do with any one who has not yet mastered the vigorous and highly complex art of not worrying. Also, he demands of his companion the knack of calm, consecutive thought. This is one reason why so many more Auto-Comrades are to be found in crow's-nests, gypsy-vans, and shirt-waist factories than on upper Fifth Avenue. For, watching the stars and the sea from a swaying masthead, taking light-heartedly to the open road, or even operating a rather unwholesome sewing-machine all day in silence, is better for consecutiveness of mind than a never-ending round of offices, clubs, committees, servants, dinners, teas, and receptions, to each of which one is a little late. In diffusing knowledge of, and enthusiasm for, this knack of concentration, Arnold Bennett's little books on mental efficiency have done wonders for the art of auto-comradeship. Their popular persuasiveness has coaxed thousands on thousands of us to go in for a few minutes' worth of mental calisthenics every day. They have actually cajoled us into the painful feat of glancing over a page of a book and then putting it down and trying to retrace the argument in memory. Or they have coaxed us to fix on some subject--any subject--for reflection, and then scourge our straying minds back to it at every few steps of the walk to the morning train. And we have found that the mental muscles have responded at once to this treatment. They have hardened under the exercise until being left alone has begun to change from confinement in the same cell with that worst of enemies who has the right to forge one's own name--into a joyful pleasure jaunt with a totally different person who, if not one's best friend, is at least to be counted on as a trusty, entertaining, resourceful, unselfish associate--at times, perhaps, a little exacting--yet certainly a far more brilliant and generally satisfactory person than his companion.