From the first two paragraphs, we discover that Wiesel uses questions. I can deduce that Wiesel uses question in order to encourage deep thinking by the audience.
He tends to throw the question to his audience in order for them to think alongside with him. The questions he asked in those paragraphs tend to bring the audience to think in his line of thought or to see his own views.
Wiesel asks the questions and immediately goes further to provide answers. I believe he uses the questions to engage the mind of his audience.
