liberty; intolerance, therefore, is a political necessity against all religions which threaten the unity of faith in a State that is not free, and in every State against those religions which threaten its existence. Absolute intolerance belongs to the absolute State; special persecution may be justified by special causes in any State. All mediaeval persecution is of the latter kind, for the sects against which it was directed were revolutionary parties. The State really defended, not its religious unity, but its political existence. If the Catholic Church was naturally inclined to persecute, she would persecute in all cases alike, when there was no interest to serve but her own. Instead of adapting her conduct to circumstances, and accepting theories according to the character of the time, she would have developed a consistent theory out of her own system, and would have been most severe when she was most free from external influences, from political objects, or from temporary or national prejudices. She would have imposed a common rule of conduct in different countries in different ages, instead of submitting to the exigencies of each time and place. Her own rule of conduct never changed. She treats it as a crime to abandon her, not to be outside her. An apostate who returns to her has a penance for his apostasy; a heretic who is converted has no penance for his heresy. Severity against those who are outside her fold is against her principles. Persecution is contrary to the nature of a universal Church; it is peculiar to the national Churches. While the Catholic Church by her progress in freedom naturally tends to push the development of States beyond the sphere where they are still obliged to preserve the unity of religion, and whilst she extends over States in all degrees of advancement, Protestantism, which belongs to a particular age and state of society, which makes no claim to universality, and which is dependent on political connection, regards persecution, not as an accident, but as a duty.