This was written in 1946
The organized lying practiced by totalitarian states is not, as is sometimes claimed, a temporary expedient of the same nature as military deception. It is something integral to totalitarianism, something that would still continue even if concentration camps and secret police forces had ceased to be necessary. Among intelligent Communists there is an underground legend to the effect that although the Russian government is obliged now to deal in lying propaganda, frame-up trials, and so forth, it is secretly recording the true facts and will publish them at some future time. We can, I believe, be quite certain that this is not the case, because the mentality implied by such an action is that of a liberal historian who believes that the past cannot be altered and that a correct knowledge of history is valuable as a matter of course. From the totalitarian point of view history is something to be created rather than learned. A totalitarian state is in effect a theocracy, and its ruling caste, in order to keep its position, has to be thought of as infallible. But since, in practice, no one is infallible, it is frequently necessary to rearrange past events in order to show that this or that mistake was not made, or that this or that imaginary triumph actually happened. Then again, every major change in policy demands a corresponding change of doctrine and a revelation of prominent historical figures. This kind of thing happens everywhere, but is clearly likelier to lead to outright falsification in societies where only one opinion is permissible at any given moment. Totalitarianism demands, in fact, the continuous alteration of the past, and in the long run probably demands a disbelief in the very existence of objective truth. The friends of totalitarianism in this country usually tend to argue that since absolute truth is not attainable, a big lie is no worse than a little lie. It is pointed out that all historical records are biased and inaccurate, or on the other hand, that modern physics has proven that what seems to us the real world is an illusion, so that to believe in the evidence of one's senses is simply vulgar philistinism. A totalitarian society which succeeded in perpetuating itself would probably set up a schizophrenic system of thought, in which the laws of common sense held good in everyday life and in certain exact sciences, but could be disregarded by the politician, the historian, and the sociologist. Already there are countless people who would think it scandalous to falsify a scientific textbook, but would see nothing wrong in falsifying an historical fact. It is at the point where literature and politics cross that totalitarianism exerts its greatest pressure on the intellectual.
....any writer who adopts the totalitarian outlook, who finds excuses for persecution and the falsification of reality, thereby destroys himself as a writer.
More at this website: http://www.resort.com/~prime8/Orwell/
A certain degree of truthfulness was possible so long as it was admitted that a fact may be true even if you don't like it. - Orwell
Edited to bold