How we cite our quotes: (Chapter.Paragraph)
Quote #7
"[T]here was a villainy of circumstances that cut these men off more completely from the rest of mankind, whose ideal of conduct had never undergone the trial of a fiendish and appalling joke." (10.20)
The Patna incident is a trial by fire that reveals unpleasant truths to all involved. Mostly it reveals their inner characters, which turn out to be pretty darn unappealing.
Quote #8
"The real significance of crime is in its being a breach of faith with the rest of mankind, and from that point of view he was no mean traitor, but his execution was a hole-and-corner affair." (14.1)
Jim didn't exactly act in "breach of faith" with all of mankind (just the sailor portion), but for the purposes of Marlow and Co. it's as if he did. Oh, and by the way, "hole-and-corner" is an old-fashioned way of saying secretive.