The religious order, however, that did most to stem the advancing tide of heresy and to raise the drooping spirits of the Catholic body during the saddest days of the sixteenth century was undoubtedly the Society of Jesus, founded by St. Ignatius of Loyola.[16] By birth St. Ignatius was a Spaniard, and by profession he was a soldier. Having been wounded at the siege of Pampeluna in 1521 he turned his mind during the period of his convalescence to the study of spiritual books, more particularly the Lives of the Saints. As he read of the struggles some of these men had sustained and of the victories they had achieved he realised that martial fame was but a shadow in comparison with the glory of the saints, and he determined to desert the army of Spain to enrol himself among the servants of Christ. With the overthrow of the Moorish kingdom of Granada fresh in his mind, it is not strange that he should have dreamt of the still greater triumph that might be secured by attacking the Mahomedans in the very seat of their power, and by inducing them to abandon the law of the Prophet for the Gospel of the Christians. With the intention of preparing himself for this work he bade good-bye to his friends and the associations of his youth, and betook himself to a lonely retreat at Manresa near Montserrat, where he gave himself up to meditation and prayer under the direction of a Benedictine monk. The result of his stay at Manresa and of his communings with God are to be seen in the /Spiritual Exercises of St. Ignatius/, a work which in the hands of his disciples has done wonders for the conversion and perfection of souls, and which in the opinion of those competent to judge has no serious rivals except the Bible and the Imitation of Christ. From Manresa he journeyed to the Holy Land to visit its sacred shrines, and to labour for the conversion of the Infidel conquerors, but having found it impossible to undertake this work at the time he returned to Europe.