Joseph Berger writes about Elie Wiesel.

Mr. Wiesel was the author of several dozen books and was a charismatic lecturer and humanities professor. In 1986, he was awarded the Nobel Peace Prize. But he was defined not so much by the work he did as by the gaping void he filled. In the aftermath of the Germans’ systematic massacre of Jews, no voice had emerged to drive home the enormity of what had happened and how it had changed mankind’s conception of itself and of God. For almost two decades, both the traumatized survivors and American Jews, guilt-ridden that they had not done more to rescue their brethren, seemed frozen in silence.

But by the sheer force of his