Standing to the side and watching Uchiha Sasuke sink into a spiral of agonizing self-reproach, Tobi spoke in a flat tone, his voice sounding as if it came from some distant horizon, carrying an indifference that seemed to see through everything:
"Itachi Uchiha wanted to give you the goal of avenging yourself upon him, to use that as motivation to force you to change, to become stronger."
A flash of imperceptible respect crossed Tobi's eyes as he continued:
Chapter 431