The Jewish reformer who changed a national religion into a religious denomination with the understanding that religion is a private affair, the Jewish revolutionary who pretended to be a world citizen in order to rid himself of Jewish nationality, the educated Jew, “a man in the street and a Jew at home”—each one of these succeeded in converting a national quality into a private affair. The result was that their private lives, their decisions and sentiments, became the very center of their “Jewishness.”