"All human beings are practicing historians," writes Gerda Lerner. "We live our lives; we tell our stories. It is as natural as breathing." It is as important as breathing, too. History shapes our self-definition and our relationship to community; it locates us in time and place and helps to give meaning to our lives. History can be the vital thread that holds a nation together, as demonstrated most strikingly in the case of Jewish history. Conversely,...