"Nevertheless it had been very difficult not to betray a momentary surprise, for in the two or three seconds while he was helping her up the girl had slipped something into his hand. There was no question that she had done it intentionally. It was something small and flat. As he passed through the lavatory door he transferred it to his pocket and felt it with the tips of his fingers. It was a scrap of paper folded into a square. While he stood at the urinal he managed, with a little more fingering, to get it unfolded. Obviously there must be a message of some kind written on it. For a moment he was tempted to take it into one of the water-closets and read it at once. But that would be shocking folly, as he well knew. There was no place where you could be more certain that the telescreens were watched continuously."
January 1, 1970
https://en.wikiquote.org/wiki/Nineteen_Eighty-Four