"We shall abolish the orgasm. Our neurologists are at work upon it now."

"There will be no loyalty, except loyalty towards the Party. There will be no love, except the love of Big Brother. There 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 there will be no need of science. There will be no distinction between beauty and ugliness. There will be no curiosity, no enjoyment 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."

#2 on the list of most depressing quotes from George Orwell's "1984."

Linked in the comments to this Metafilter post on an article titled "The masterpiece that killed George Orwell."