It is very obvious why the Holy See so sagaciously preferred to assign the prosecution of heretics, a matter of the first importance, to an extraordinary tribunal rather than leave the trials in the hands of the bishops. Without taking into consideration the fact that these new duties would have seriously encroached upon, if not wholly absorbed, the time and activities of a bishop, the prelates who ruled most dioceses were the subject of some monarch with whom they might have come in conflict on many a delicate point which could easily be conceived to arise, and the result of such disagreement would have been fraught with endless political difficulties and internal embarrassments. A court of religious, responsible to the Pope alone, would act more fairly, more freely, without fear or favour. The profligate Philip I of France, for example, during his long, worthless, and dishonoured reign (1060-1108), by his evil courses drew upon himself the censure of the Church, whereupon he banished the Bishop of Beauvais and revoked the decisions of the episcopal courts.[44] In a letter[45] to William, Count of Poitiers, Pope S. Gregory VII energetically declares that if the King does not cease from molesting the bishops and interfering with their judicature a sentence of excommunication will be launched. In another letter the same pontiff complains of the disrespect shown to the ecclesiastical tribunals, and addressing the French bishops he cries: “Your king, who sooth to say should be termed not a king but a cruel tyrant, inspired by Satan, is the head and cause of these evils. For he has notoriously passed all his days in foulest crimes, in seeking to do wickedness and to ensue it.”[46] The conflict of the bishops of a realm with an unworthy and evil monarch is a commonplace of history. These troubles could scarcely arise in the case of courts forane. The words “inquisition” and “inquisitors” began definitely to acquire their accepted signification in the earlier half of the thirteenth century. Thus in 1235 Gregory IX writes to the Archbishop of Sens: “Know then that we have charged the Provincial of the Order of Preachers in this same realm to nominate certain of his brethren, who are best fitted for so weighty a business, as Inquisitors that they may proceed against all notorious evildoers in the aforesaid realm ... and we also charge thee, dear Brother, that thou shouldest be instant and zealous in this matter of establishing an Inquisition by the appointment of those who seem to be best fitted for such a work, and let thy loins be girded, Brother, to fight boldly the battles of the Lord.”[47] In 1246 Innocent IV wrote to the Superiors of the Franciscans giving them leave to recall at will: “those brethren who have been sent abroad to preach the Mystery of the Cross of Christ, or to seek out and take measure against the plague sore of heresy.”[48]