Crime and Punishment
How we cite our quotes:
"Hey! You Svidrigaïlov! What do you want here?" [Raskolnikov] shouted, clenching his fists and laughing, spluttering with rage. (1.4.14)
Raskolnikov (and the readers) have only heard about Svidrigaïlov at this time. Raskolnikov calling the sketchy man in the park "Svidrigaïlov" foreshadows his presence in St. Petersburg, and prepares us for his nastiness.
"Kill her, take her money and with the help of it devote oneself to the service of humanity and the good of all. What do you think, would not one tiny crime be wiped out by thousands of good deeds?" (1.6.14)
This isn't Raskolnikov talking, but rather another student. The passage simply states the complicated question posed over and over in the novel. What do you think? Can killing ever be justified? If so, when and why? If not, why not.
Fear gained more and more mastery over him, especially after this second, quite unexpected murder. (1.7.28)
We wonder how this book would have turned out if Raskolnikov hadn't killed Lizaveta. Since Raskolnikov is partially inspired by his desire to protect Lizaveta from Alyona's beatings, it's extremely ironic that he ends up killing her too.