In Chapter 4, the dinner scene seems to lose me in its path as the characters rapidly change topics. The endless conversations simply just don't make sense to me; but I found that Pip seems to always return to speaking of the gravy. But does it mean anything important?
"'True, sir. Many a moral for the young,' returned Mr. Wopsle; and I knew he was going to lug me in, before he said it; 'might be deducted from the text.' ('You listen to this,' said my sister to me, in a severe parenthesis)
Joe gave me some more gravy."
What was the main idea from this dialog clogging chapter? Are they speaking metaphorically? I'm just confused.