Winston questions Parsons as to why he had been arrested and he immediately replied;
Then he babbled about how he had worked for the Party, did his best, and assumed he would get five years, maybe ten.
‘Are you guilty?’ said Winston.
‘Of course I’m guilty!’ cried Parsons with a servile glance at the telescreen. ‘You don’t think the Party would arrest an innocent man, do you?’ Thoughtcrime is a dreadful thing…”
Parsons went on defining thoughtcrime, justifying it and condemning himself for saying; “Down With Big Brother” in his sleep.
What is so striking is that in hopes to ‘please’ the Party Parsons will betray himself. He will do/say anything if he thinks it will help him.