Quote
"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."
"Type I: "Technological level close to the level presently attained on earth, with energy consumption at ≈4×1019 erg/sec (4 × 1012 Watt)." Guillermo A. Lemarchand stated this as "A level near contemporary terrestrial civilization with an energy capability equivalent to the solar insolation on Earth, between 1016 and 1017 watts."

"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."
"If Western Civilization were a person, we would be directing it to the nearest meeting of War-Preparers Anonymous. We would be telling it to stand up before the meeting and say "My name is Western Civilization. I am a compulsive War-Preparer. I have lost everything I ever cared about. I should have come here long ago. I first hit bottom in World War I"."
"A great civilization is not conquered from without until it has destroyed itself within. The essential causes of Rome’s decline lay in her people, her morals, her class struggle, her failing trade, her bureaucratic despotism, her stifling taxes, her consuming wars."
"Russian Ambassador: Civilization is an illusion; a game of pretend. What is real is the fact that we are still animals driven by primal instincts. Civilization crumbles whenever we need it most. In the right situation, we are all capable of the most terrible crimes. Imagine a world where this was no so; imagine a world where every crisis did not result in new atrocities, where every newspaper is not full of war and violence. This is to imagine a world where human beings cease to be human."
"Civilization is at the cross-roads. The issues are now so obvious that no argument is necessary. Forces of tyranny are arrayed against those who are minded for liberty and peace. Humanity is dividing into two camps. Men are spending most of their substance on material for mutual slaughter. In such a way are the first two thousand years of the Christian era drawing to a close. The world presents a panorama in which progress and barbarism, organization and chaos, brilliance and stupidity seem inextricably mixed. What has gone wrong? Is there true cause for hope or for despair? Is it possible to read the riddle of human evolution, to discover the clue to future progress, and to find the means by which humanity can be set free from the present apparent deadlock? For civilization has reached an impasse involving other things than war, an impasse involving economics, health, morality, and self-knowledge. Is there any way of piercing the fog of surface happenings, and of understanding the true trend and significance of events? Introduction"
"Western civilization is material, frankly material. It measures progress by the progress of matter — railways, conquest of disease, conquest of the air. These are triumphs of civilization according to Western measure. No one says, ‘Now the people are more truthful or more humble.’ I judge it by my own test and I use the word ‘Satanic’ in describing it. You set such store by the temporal, external things. The essential of Eastern civilization is that it is spiritual, immaterial. The fruits of Western civilization the East may approach with avidity but with a sense of guilt."