Quotes from book
Night

Night is a work by Elie Wiesel about his experience with his father in the Nazi German concentration camps at Auschwitz and Buchenwald in 1944–1945, at the height of the Holocaust toward the end of the Second World War. In just over 100 pages of sparse and fragmented narrative, Wiesel writes about the death of God and his own increasing disgust with humanity, reflected in the inversion of the parent–child relationship, as his father declines to a helpless state and Wiesel becomes his resentful teenage caregiver. "If only I could get rid of this dead weight ... Immediately I felt ashamed of myself, ashamed forever." In Night everything is inverted, every value destroyed. "Here there are no fathers, no brothers, no friends", a kapo tells him. "Everyone lives and dies for himself alone."Wiesel was 16 when Buchenwald was liberated by the United States Army in April 1945, too late for his father, who died after a beating while Wiesel lay silently on the bunk above for fear of being beaten too. He moved to Paris after the war and in 1954 completed an 862-page manuscript in Yiddish about his experiences, published in Argentina as the 245-page Un di velt hot geshvign . The novelist François Mauriac helped him find a French publisher. Les Éditions de Minuit published 178 pages as La Nuit in 1958, and in 1960 Hill & Wang in New York published a 116-page translation as Night.

Source: Night (1960)
Context: "Don't be deluded. Hitler has made it clear that he will annihilate all Jews before the clock strikes twelve."
I exploded:
"What do you care what he said? Would you want us to consider him a prophet?"
His cold eyes stared at me. At last, he said wearily:
"I have more faith in Hitler than in anyone else. He alone has kept his promises, all his promises, to the Jewish people."

“To forget the dead would be akin to killing them a second time.”
Source: Night

“every question possessed a power that was lost in the answer…”
Variant: He explained to me with great insistence that every question posessed a power that did not lie in the answer.
Source: Night

Misattributed
Source: Robert McAfee Brown https://en.wikipedia.org/wiki/Robert_McAfee_Brown. Preface for the 25th anniversary edition of Night https://en.wikipedia.org/wiki/Night_%28book%29. Page v, Bantam Books paperback; 1982 reissue edition.

“What hurts the victim most is not the cruelty of the oppressor but the silence of the bystander.”
In an interview with Carol Rittner and Sandra Meyers in Courage To Care - Rescuers of Jews during the Holocaust, NYU Press, 1986, p. 2. Also quoted by Yad Vashem http://www.yadvashem.org/righteous/about-the-program.html and Nicholas Kristoff in The Silence of the Bystanders https://www.nytimes.com/2006/03/19/opinion/the-silence-of-bystanders.html, New York Times (March 19, 2006).
Source: Night