Elie conveyed his message with the use of repetition
"Never shall I forget that smoke. Never shall I forget the small faces of the children whose bodies I saw transformed into smoke under a silent night sky. Never shall I forget those flames...."
Here Elie repeats the words "never shall I forget" to stress the fact. This quote encompasses some of the traumatic events he experienced in just his first night and shows how it can never be forgotten.
"The bell regulated everything... I hated that bell. Whenever I happened to dream of a better world, I imagined a universe without a bell." (73)
The bell is a motif throughout the book something that torments him, something he would clearly not be able to forget because as he dreams of a better world it is one without the bell. Just as he will not forget this he is signifying he doesn't want people to forget the trauma it put him and others through.
"From the depths of the mirror, a corpse was contemplating me. The look in his eyes as he gazed at me has never left me." (115)
Elie shows his vivid memory of when he first looked in the mirror through this quote. He uses imagery to support how that sight has never left him, how he will always remember as should everyone.
"I only know that without this testimony, my life as an writer or my life, period would not have become what it is: that of a witness who believes he has a moral obligation to try to prevent the enemy from enjoying one last victory by allowing his crimes to be erased from human memory." (viii)
Elie is explaining how forgetting the crimes that have been committed only allows the oppressor a victory. This furthers his message of never forget by stating the consequences that come from forgetting.
The holocaust was a terrible period in history. In which over six million people suffered and died. Throughout Elie's text he emphasizes to never forget. He believes that "if we forget, we are guilty, we are accomplices". These people have been put through traumatic events and forgetting that would understate their suffering. Everybody deserves to be remembered.