The physical vigor acquired in the training for athletic games--so far as the training may be said to have this effect--is of advantage both to the individual and to the collectivity, in that, other things being equal, it conduces to economic serviceability. The spiritual traits which go with athletic sports are likewise economically advantageous to the individual, as contradistinguished from the interests of the collectivity. This holds true in any community where these traits are present in some degree in the population. Modern competition is in large part a process of self-assertion on the basis of these traits of predatory human nature. In the sophisticated form in which they enter into the modern, peaceable emulation, the possession of these traits in some measure is almost a necessary of life to the civilized man. But while they are indispensable to the competitive individual, they are not directly serviceable to the community. So far as regards the serviceability of the individual for the purposes of the collective life, emulative efficiency is of use only indirectly if at all. Ferocity and cunning are of no use to the community except in its hostile dealings with other communities; and they are useful to the individual only because there is so large a proportion of the same traits actively present in the human environment to which he is exposed. Any individual who enters the competitive struggle without the due endowment of these traits is at a disadvantage, somewhat as a hornless steer would find himself at a disadvantage in a drove of horned cattle. The possession and the cultivation of the predatory traits of character may, of course, be desirable on other than economic grounds. There is a prevalent aesthetic or ethical predilection for the barbarian aptitudes, and the traits in question minister so effectively to this predilection that their serviceability in the aesthetic or ethical respect probably offsets any economic unserviceability which they may give. But for the present purpose that is beside the point. Therefore nothing is said here as to the desirability or advisability of sports on the whole, or as to their value on other than economic grounds.