In it, the thought crime law-enforcer O'Brien explains to his torture victim the concept of 'Order out of Chaos' and how it is used to shape or re-shape society to the extreme: -

..."The real power, the power we have to fight for night and day, is not power over things, but over men." He paused, and for a moment assumed again his air of a schoolmaster questioning a promising pupil: "How does one man assert his power over another, Winston?"

Winston thought. "By making him suffer," he said.

"Exactly. By making him suffer. Obedience is not enough. Unless he is suffering, how can you be sure that he is obeying your will and not his own? Power is in inflicting pain and humiliation. Power is in caring human minds to pieces and putting them together again in new shapes of your own choosing. Do you begin to see, then, what kind of world we are creating? It is the exact opposite of the stupid hedonistic Utopias that the old reformers imagined. A world of fear and treachery and torment, a world of trampling and being trampled upon, a world which will grow not less but more merciless as it refines itself. Progress in our world will be progress toward more pain. The old civilizations claimed that they were founded on love and justice. Ours is founded upon hatred. In our world there will be no emotions except fear, rage, triumph, and self-abasement. Everything else we shall destroy -- everything. Already we are breaking down the habits of thought which have survived from before the Revolution. We have cut the links between child and parents, and between man and man, and between man and woman. No one cares trust a wife or a child or a friend any longer. But in the future will be no wives and no friends. Children will be taken from their mothers at birth, as one takes eggs from a hen. The sex instinct will be eradicated. Procreation will be an annual formality like the renewal of a ration card. We shall abolish the orgasm. Our neurologists are at work upon it now. There will be no loyalty, except loyalty toward the Party. There will be no love, except the love of Big Brother. They will be no laughter, except the laugh of triumph over a defeated enemy. There will be no art, no literature, no science. When we are omnipotent we shall have no more need of science. There will be no distinction between beauty and ugliness. There will be no curiosity, no employment of the process of life. All competing pleasures will be destroyed. But always -- do not forget this, Winston -- always there will be the intoxication of power, constantly increasing and constantly growing subtler. Always, at every moment, there will be the thrill of victory, the sensation of trampling on an enemy who is helpless. If you want a picture of the future, imagine a boot stamping on a human face -- forever."

We also see a reference earlier on in the book in Part 2: Chapter 5: -

"In some ways she was far more acute than Winston, and far less susceptible to Party propaganda. Once when he happened in some connection to mention the war against Eurasia, she startled him by saying casually that in her opinion the war was not happening. The rocket bombs which fell daily on London were probably fired by the Government of Oceania itself, 'just to keep people frightened'."