It is the historic custom of the Church of Rome to enlist in its service monastic or quasi-monastic bodies in addition to the ordinary clergy. In its hour of greatest need, at the very outbreak of the Reformation, the Society of Jesus was formed as one of these auxiliary regiments, and in the war which the Church of Rome has waged since that date the Jesuits have rendered the most spirited and conspicuous service. Yet the procedure of this Society has differed in many important respects from that of the other regiments of the Church, and a vast and unceasing controversy has gathered about it. It is probable that a thousand times, or several thousand times, more books and pamphlets and articles have been written about the Jesuits than about even the oldest and most powerful or learned of the monastic bodies. Not a work of history can be opened, in any language, but it will contain more references to the Jesuits than to all the other religious orders collectively. But opinions differ as much today as they did a hundred or two hundred years ago about the character of the Jesuits, and the warmest eulogies are chilled by the most bitter and withering indictments.