It is clear that every civilization undergoes a process of historical change. We can see that a civilization comes into existence, passes through a long experience, and eventually goes out of existence.

Civilization is a stream with banks. The stream is sometimes filled with blood from people killing, stealing, shouting and doing things historians usually record; while on the banks, unnoticed, people build homes, make love, raise children, sing songs, write poetry and even whittle statues. The story of civilization is the story of what happened on the banks. Historians are pessimists because they ignore the banks of the river.

"Cultures are organisms," Spengler explains, "and world-history is their collective biography." Like any other vital organism, then, each culture goes through the stages of youth, maturity, and decline. "Culture is the prime phenomenon of all past and future world-history." "Every Culture has its own Civilization...The Civilization is the inevitable destiny of the Culture....Civilizations are the most external and artificial states of which a species of developed humanity is capable. They are a conclusion, the thing-become succeeding the thing-becoming, death following life, rigidity following expansion, intellectual age and the stone-built, petrifying world-city following mother-earth and the spiritual childhood of Doric and Gothic. They are an end, irrevocable, yet by inward necessity reached again and again." Thus, while the culture is a period of ebullient creativity, the civilization that inevitably follows is a period of reflection, organization, and search for material comfort and convenience. For example, classical Greece was the culture; imperial Rome the civilization. From the beauties of Greek poetry to the imperialism of Roman law, we now live in the civilization of Western ("Faustian") culture and cannot avoid the consequences. Among these Spengler foresaw the "megalopolis," the city of faceless masses, the omnipotence of money, and a new Caesarism.

A civilization is a social entity that manifests religious, political , legal, and customary uniformity over an extended period, and which confers on its members the benefits of socially accumulated knowledge.

There’s a certain step-by-step logic, inherent in human nature and the peculiarities of human psychology, which ensures that Man will always organize into the largest possible group. Civilization is inevitable, if you want a pat phrase.

Civilization is social order promoting cultural creation. Four elements constitute it: economic provision, political organization, moral tradition, and the pursuit of knowledge and the arts. It begins where chaos and insecurity end. For when fear is overcome, curiosity and constructiveness are free, and man passes by natural impulse towards the understanding and embellishment of life.” (Will Durant, Story of Civilization, pg 1, vol. 1)

As I studied history, I saw that it typically transpires via relatively well-defined life cycles, like those of organisms, that evolve as each generation transitions to the next.

What we call civilisation—the accumulation of knowledge which has come down to us from our forefathers—is the fruit of thousands of years of human thought and toil. It is not the result of the labour of the ancestors of any separate class of people who exist to-day, and therefore it is by right the common heritage of all. Every little child that is born into the world, no matter whether he is clever or dull, whether he is physically perfect or lame, or blind, no matter how much he may excel or fall short of his fellows in other respects, in one thing at least he is their equal—he is one of the heirs of all the ages that have gone before.

The seeds of civilization are in every culture, but it is city life that brings them to fruition.

Civilization is a product of the cerebral cortex.

Civilizations in decline are consistently characterized by a tendency towards standardization and uniformity.

Out of the East came the light! ... the march of civilization has always tended to follow the light of the sun.

I believe, like you, that civilization is a natural and inevitable consequence, whether good or evil I am not prepared to state.

Civilization is a method of living, an attitude of equal respect for all men.