once reached, will continue, seems to depend upon external causes, for the iron bonds of the social environment which grows up repress disintegrating forces as well as improvement. Such a community can be most easily conquered, for the masses of the people are trained to a passive acquiescence in a life of hopeless labor. If the conquerors merely take the place of the ruling class, as the Hyksos did in Egypt and the Tartars in China, everything will go on as before. If they ravage and destroy, the glory of palace and temple remains but in ruins, population becomes sparse, and knowledge and art are lost.
European civilization differs in character from civilizations of the Egyptian type because it springs not from the association of a homogeneous people developing from the beginning, or at least for a long time, under the same conditions, but from the association of peoples who in separation had acquired distinctive social characteristics, and whose smaller organizations longer prevented the concentration of power and wealth in one center. The physical conformation of the Grecian peninsula is such as to separate the people at first into a number of small communities. As those petty republics and nominal kingdoms ceased to waste their energies in warfare, and the peaceable co-operation of commerce extended, the light of civilization blazed up. But the principle of association was never strong enough to save Greece from inter-tribal war, and when this was put an end to by conquest, the tendency to inequality, which had been combated with various devices by Grecian sages and statesmen, worked its result, and Grecian valor, art, and literature became things of the past. And so in the rise and extension, the decline and fall, of Roman civilization, may be seen the working of these two principles of association and equality, from the combination of which springs progress.
