Why does Wiesel return to the image of himself as a young boy in the conclusion of his speech?

Wiesel uses the image of himself as a young boy to emphasize the innocence and vulnerability of the victims of the Holocaust. By recounting his own experiences as a child, he humanizes the suffering and loss experienced by all those who endured the horrors of the Holocaust. This personal connection helps to make the story more relatable and impactful for the audience.