It is just because civilization is ever evolving, changing, and becoming more complicated, that experts find it so difficult to define it in explicit terms.
Arthur KeithThere are the further difficulties of building a population out of a diversity of races, each at a different stage of cultural evolution, some in need of restraint, many in need of protection; everywhere a bewildering Babel of tongues.
Arthur KeithThe main force used in the evolving world of humanity has hitherto been applied in the form of war.
Arthur Keith