How we cite our quotes: (Volume.Chapter.Paragraph.)
Quote #4
The thought followed him, gentle, unstressed, monotonous, at his work, at home, at night: he was a murderer...no, but almost a murderer...almost a murderer...(1.15.44)
The style here really emphasizes Keating's inner distress and shock. The ellipses, short phrases, and repetition of the word murder give us a lot of insight into Keating's traumatized state of mind.
Quote #5
"I'll break you some day, I swear I will, if it's the last thing I do!"
"Keating," said Roark, "why betray so much?" (1.15.118-9)
Keating goes for a Wicked Witch of the West style threat here, but Roark isn't buying it. It's interesting that Roark views Keating's threat towards him as a sad self-revelation.