In George Orwell's dystopian classic 1984, doublethink is the act of holding, simultaneously, two opposite, individually exclusive ideas or opinions and believing in both simultaneously and absolutely. Doublethink requires using logic against logic or suspending disbelief in the contradiction.

The three slogans of the party — "War Is Peace; Freedom Is Slavery; Ignorance Is Strength" — are obvious examples of doublethink. The act of doublethink also occurs in more subtle details throughout the novel.

Department of Premier and Cabinet Victoria, Australia: Staying Apart Keeps Us Together 15'

George Orwell once said that the “English intelligentsia…can swallow totalitarianism because they have no experience of anything except liberalism…So much of left-wing thought is a kind of playing with fire by people who don’t even know that fire is hot.” Having experienced the reality of totalitarianism first-hand, Orwell knew all too well the ways in which people far removed from it employ “soothing phrases” to disguise more sinister ends. Of course, he would later coin the term “Newspeak” in his novel Nineteen Eighty-Four (1949). This was the totalitarian language created to meet the ideological requirements of English Socialism under Big Brother.

“The heirs of the French, English, and American revolutions had partly believed in their own phrases about the rights of man, freedom of speech, equality before the law, and the like, and have even allowed their conduct to be influenced by them to some extent. But by the fourth decade of the twentieth century all the main currents of political thought were authoritarian. The earthly paradise had been discredited at exactly the moment when it became realizable. Every new political theory, by whatever name it called itself, led back to hierarchy and regimentation. And in the general hardening of outlook that set in round about 1930, practices which had been long abandoned, in some cases for hundreds of years — imprisonment without trial, the use of war prisoners as slaves, public executions, torture to extract confessions, the use of hostages, and the deportation of whole populations — not only became common again, but were tolerated and even defended by people who considered themselves enlightened and progressive.”

― George Orwell, 1984

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