Can you help me find a theme on silence for the book Night?

Question

Night by Elie Weisel....a new translation by his wife

Answer 1

"Never shall I forget that night, the first night in camp, which has turned my life into one long night, seven times cursed and seven times sealed. Never shall I forget that smoke. Never shall I forget the little faces of the children, whose bodies I saw turned into wreaths of smoke beneath a silent blue sky.Never shall I forget those flames which consumed my faith forever."

"Never shall I forget that nocturnal silence which deprived me, for all eternity, of the desire to live. Never shall I forget those moments which murdered my God and my soul and turned my dreams to dust. Never shall I forget these things, even if I am condemned to live as long as God Himself. Never."

I think the silence was generated by what was seen at the death camps in 1944 until 10 years later when he first spoke of this.