Whatever may be thought of it, it is the Jesuit's manual, the _vade mecum_, on which he moulds his particular and characteristic form of spirituality. In the novitiate, he goes through these "Exercises" for thirty consecutive days; and shortly after he becomes a priest, he makes them once again for the same period. Moreover, all Jesuits are bound by rule to repeat them in a condensed form for eight days every year; and during the summer months the priests are generally employed in explaining them to the clergy and religious communities. Indeed the use has become so general in the Church at the present time, that houses have been opened where laymen can thus devote a few days to a study of their souls. Even the Sovereign Pontiffs themselves employ them as a means of spiritual advancement. Thus we find in the press of today the announcement, as of an ordinary event, that "in the Vatican, the Spiritual Exercises which began on Sunday, September 26, 1920, and ended on October 2, were followed by His Holiness, Benedict XV, with the prelates and ecclesiastics of his Court; during which time, all public audiences were suspended. After the retreat, the two directors and those who had taken part in it were presented to the Sovereign Pontiff, who pronounced a glowing eulogy of what he called the 'Holy' Exercises." St. Ignatius' authorship of these "Exercises" has been frequently challenged, and they have been described as little else than a plagiarism of the book known as the "Ejercitatorio de la vida espiritual," which was given to him by the Benedictines of Montserrat. It is perfectly true that he had that book in his hands during all the time he was at Manresa, and that he went every week to confession to Dom Chanones, who was a monk of Montserrat, but there are very positive differences between the "Ejercitatorio" and the "Spiritual Exercises."