tes with his own hand,
limited in kind, must be exchanged for all the other commodities which
he would have. More than this, all people are ranged in economic
groups, each group dependent upon all the others--the farmers dependent
upon {455} the manufacturers of implements and goods, upon bankers,
lawyers, ministers, and teachers; the manufacturers dependent upon the
farmers and all the other classes; and so with every class.

This interdependent relation renders it impossible to improve one group
without improving the others, or to work a great detriment to one group
without injuring the others. If civilization is to be perpetuated and
improved, the banker must be interested in the welfare of the farmer,
the farmer in the welfare of the banker, both in the prosperity of
manufacturers, and all in the welfare of the common laborer. The
tendency for this mutual interest to increase is evinced in all human
social relations, and speaks well for the future of civilization.

_The Progress of the Race Based on Social
Opportunities_.--Anthropologists tell us that no great change in the
physical capacity of man has taken place for many centuries. The
maximum brain capacity has probably not exceeded that of the Cro-Magnon
race in the Paleolithic period of European culture. Undoubtedly,
however, there has been some change in the quality of the brain,
increasing its storage batteries of power and through education the
utilization of that power. We would scarcely expect, however, with all
of our education and scientific development, to increase the stature of
man or to enlarge his brain. Much is being done, however, in getting
the effective service of the brain not only through natural selective
processes, but through education. The improvement of human society has
been brought about largely by training and the increased knowledge
which it has brought to us through invention and discovery, and their
application to the practical and theoretical arts.

All these would have been buried had it not been for the protection of
co-operative society and the increased power derived therefrom. Even
though we exercise the selective power of humanity under the direction
of our best intelligence, the individual must find his future
opportunity in the better {456} conditions furnished by society.
Granted that individual and racial powers are essential through
hereditary development, progress can only be obtained by the expression
of th