Another specification of what the phrase “the world is one” may mean is unity of purpose. All the man-made systems, administrative, industrial, military, or what not, exist each for it’s controlling purpose. Every living being pursues its own peculiar purposes. They cooperate, according to the degree of their development, in collective or tribal purposes, larger ends thus enveloping lesser ones, until an absolutely single, final climacteric purpose subserved by all things without exception might conceivably be reached. It is needless to say that the appearances conflict with such a view.
Pg 61, Pragmatism – William James, ISBN 978-0-7607-4996-8