Killing rips the soul apart.

“Hermione had taken his hand again and was gripping it tightly. He could not loo…”

“I’m a teacher! A teacher, Potter! How dare yeh threaten ter break down my door!…”

“Snape raised his wand and pointed it directly at Dumbledore."Avada Kedavra!”

“You've sort of made up for it tonight,' said Harry. 'Getting the sword. Finishi…”