5.

 This letter follows so shortly after Our Encyclical marking the fifteenth centenary of the birth of St. Jerome because these two illustrious men have much in common. They are almost contemporary, both were monks, both lived in Syria, and both were outstanding for their study and knowledge of the Scriptures. You may rightly compare them to "two shining lights,"[¹⁴] one illuminating the West, the other the East. Their writings, being of the same spirit, are equally valuable. Both the Latin and the Eastern Fathers have agreed with those two and praise them similarly.