Who said "Assef was a sociopath in the making."?

This quote is attributed to Amir.

Assef was a sociopath in the making. - Amir

"Assef was a sociopath in the making."

Amir

Character in The Kite Runner

Buy "The Kite Runner" on Amazon

"I became what I am today at the age of twelve, on a frigid December day in 1975."

"When you kill for the first time, you lose your innocence."

"Theft and lying were part of their world."

"I could wade into this river, let my sins drown to the bottom."