Read it through once

“I don’t ask you what you owe, because you don’t know; and if you did know, you wouldn’t tell me; you would say less. Yes, yes, my friend,” cried Mr. Jaggers, waving his forefinger to stop me as I made a show of protesting: “it’s likely enough that you think you wouldn’t, but you would. You’ll excuse me, but I know better than you. Now, take this piece of paper in your hand. You have got it? Very good. Now, unfold it and tell me what it is.”