In his 1922 book, "The Jews", Belloc argued that "the continued presence of the Jewish nation intermixed with other nations alien to it presents a permanent problem of the gravest character," and that the "Catholic Church is the conservator of an age-long European tradition, and that tradition will never compromise with the fiction that a Jew can be other than a Jew. Wherever the Catholic Church has power, and in proportion to its power, the Jewish problem will be recognized to the full."