The mussar movement was the sworn enemy of the haskalah and because the battle between these two forces occurred at the dawning of the media age, it became a propaganda war in the Jewish newspapers. Opposition to mussar only intensified after the death of its founder Rabbi Yisroel Salanter so that his successor Rabbi Yitzchok Blazer faced criticism from both outside and within Orthodox Jewry. Rabbi Wein details the achievements of the great rabbis at the helm of the mussar movement and their phenomenal success in combating assimilation.