According to Wiesel, in what way do Eliezer's experiences in the camps affect him?

In Night, the author shows us the experiences that the young boy Eliezer has in the concentration camps and how it shapes him. Once an innocent youth, Eliezer becomes hardened by the crimes committed in the camps. After seeing the deaths of his mother and sisters, he becomes complacent after the death of his father. He seems to fight for self-preservation above all when all of the people in the camps are being starved and abused. After he hears his dying father calling for him for an hour, he goes off to sleep.