Its always a good time to revisit 1984:
‘If you mean confessing,’ she said, ‘we shall do that, right enough. Everybody always confesses. You can’t help it. They torture you.’
‘I don’t mean confessing. Confession is not betrayal. What you say or do doesn’t matter: only feelings matter. If they could make me stop loving you — that would be the real betrayal.’
She thought it over. ‘They can’t do that,’ she said finally. ‘It’s the one thing they can’t do. They can make you say anything — anything — but they can’t make you believe it. They can’t get inside you.’
‘No,’ he said a little more hopefully, ‘no; that’s quite true. They can’t get inside you. If you can feel that staying human is worth while, even when it can’t have any result whatever, you’ve beaten them.’
He thought of the telescreen with its never-sleeping ear. They could spy upon you night and day, but if you kept your head you could still outwit them. With all their cleverness they had never mastered the secret of finding out what another human being was thinking. Perhaps that was less true when you were actually in their hands. One did not know what happened inside the Ministry of Love, but it was possible to guess: tortures, drugs, delicate instruments that registered your nervous reactions, gradual wearing-down by sleeplessness and solitude and persistent questioning. Facts, at any rate, could not be kept hidden. They could be tracked down by enquiry, they could be squeezed out of you by torture. But if the object was not to stay alive but to stay human, what difference did it ultimately make? They could not alter your feelings: for that matter you could not alter them yourself, even if you wanted to. They could lay bare in the utmost detail everything that you had done or said or thought; but the inner heart, whose workings were mysterious even to yourself, remained impregnable.
George Orwell, 1984