Pope Gelasius in his Decree concerning the Apocryphal Books.
"Likewise as to the Chronicles of Eusebius and the books of his Ecclesiastical History, although in the first book of his narration he has grown cold, and has afterwards written one book in praise and in defense of Origen the schismatic, yet on account of his singular knowledge of things which pertain to instruction, we do not say that they ought to be rejected."
The same in his book On the Two Natures.
"That saying the same thing with one heart and one mouth we may also believe what we have received from our forefathers, and, God giving them to us, that we may hand them down to posterity to be believed in, with which things the adduced testimony of the Catholic masters, being summed up, bear witness that a united faith in a gracious God endures."
And a little farther on.
"From the exposition of the seventh psalm, by Eusebius, bishop in Palestine, by surname Pamphili, etc. Likewise from his Præparatio Evangelica, Book VII."
Pope Pelagius II. in his Third Epistle to Elias of Aquileia and other Bishops of Istria.
"For, indeed, among hæresiarchs who can be found worse than Origen, and among historiographers who more honorable than Eusebius? And who of us does not know with how great praises Eusebius extols Origen in his books? But because the holy Church deals more kindly with the hearts of her faithful ones than she does severely with their words, neither could the testimony of Eusebius remove him from his proper place among heretics, nor on the other hand has she condemned Eusebius for the fault of praising Origen."
Evagrius, in the First Book of his Ecclesiastical History (chap. 1).
"Eusebius Pamphili--an especially able writer, to the extent, in particular, of inducing his readers to embrace our religion, though failing to perfect them in the faith--and Sozomen, Theodoret, and Socrates have produced a most excellent record of the advent of our compassionate God, and his ascension into heaven, and of all that has been achieved in the endurance of the divine Apostles, as well as of the other martyrs," etc.
Gregory the Great in his Epistle to Eulogius, Bishop of Alexandria.
"I have now become one of the number of hearers, to whom your Holiness has taken the pains to write, that we ought to transmit the deeds of all the martyrs which have been collected by Eusebius of Cæsarea in the age of Constantine of holy memory. But I was not aware before receiving your Holiness' letter whether these things had been collected or not. I therefore am thankful that being informed by the writings of your most holy learning, I have begun to know what I did not know before. For excepting these things which are contained in the books of this same Eusebius On the deeds of the holy martyrs, I have met with nothing else in the archives of this our church, nor in the libraries of Rome, except some few collected in a single volume."
Gelasius of Cyzicus in his Second Book On the Council of Nicæa (chap. 1).
"Let us hear now what says this the most illustrious husbandman in ecclesiastical farming, the most truth-loving Eusebius, surnamed after the celebrated Pamphilus. Licinius, indeed, he says, having followed the same path of impiety with the ungodly tyrants, has justly been brought to the same precipice with them, etc. (which may be found at the end of the tenth book of the Ecclesiastical History). As to Eusebius Pamphili, the most trustworthy of ancient ecclesiastical historians, who has investigated and set forth so many struggles, having made a choice from among his simply written works, we say that in all ten books of his Ecclesiastical History he has left behind an accurately written work. Beginning with the advent of our Lord he has, not without much labor, proceeded as far as those times. For how else could it be with him who took so great care to preserve for us the harmony of this collection? But as I have just said, he brought to bear upon it much study and an untold amount of labor. But let no one suppose, from those things which have been alleged with regard to him, that this man ever adopted the heresy of Arius; but let him be sure, that even if he did speak somewhat of, and did write briefly concerning the conjectures of Arius, he certainly did not do it on account of his entertaining the impious notion of that man, but from artless simplicity, as indeed he himself fully assures us in his Apology, which he distributed generally among orthodox bishops."
The author of the Alexandrian Chronicle (p. 582).
"The very learned Eusebius Pamphili has written thus: As the Jews crucified Christ at the feast, so they all perished at their own feast."
Nicephorus in the Sixth Book of his History (chap. 37).
"Upon whose authority also we know of the divine Pamphilus as both living the life of a philosopher and wearing the dignity of presbyter in that place. His life and every event in it, also his establishing in that place the study of sacred and profane philosophy, also his confession of his religion in divers persecutions, his struggles, and at last his wearing the martyr's crown, Eusebius his nephew, who had such a regard for him as to take from him his surname, has comprehended in detail in one separate book; to this we refer those who may wish to find out accurately concerning him. This Eusebius, indeed, although having prosecuted many studies, especially excels in the study of sacred literature. His life extended until the time of Constantius. Being a man pre-eminently Christian, and endowed with great zeal for Christ, he has written the Præparatio Evangelica in fifteen books, and in ten more the Demonstratio Evangelica. He was also the first one to take in hand this subject, having been the first to call his book an Ecclesiastical History; this work is contained in ten volumes. There is also another book of his extant which he entitled Canons, in which he accurately investigates chronological matters. He has also composed five books On the Life of Constantine, and another addressed to him which he calls triakontaeterikon. To Stephanus he also dedicates another concerning those things in the sacred Gospels which have been called in question; and he has also left behind divers other works which are of great benefit to the Church. Apart from being such a man as this, he in many ways seems to uphold the opinions of Arius," etc.
From the ms. Acts of Pope Silvester.
"Eusebius Pamphili, in writing his Ecclesiastical History, has in every case omitted to mention those things which he has pointed out in other works; for he has put into eleven books the sufferings of the martyrs, bishops, and confessors, who have suffered in almost all the provinces. But indeed as to the sufferings of women and maidens, such as with manly fortitude suffered for the sake of Christ the Lord, he records nothing. He is, moreover, the only one who has set forth in their order the sufferings of the bishops, from the Apostle Peter down. Moreover, he drew up for the benefit of the public a catalogue of the pontiffs of those cities and apostolic seats; that is, of the great city of Rome, and the cities of Alexandria and Antioch. Of the number then of those of whom, up to his own times, the above-mentioned author wrote in the Greek tongue, this man's life he was unable to paraphrase; that is, the life of the saint Silvester," etc.
An ancient author in the Passion of the Holy Valerian.
"The glorious struggles of the most blessed martyrs, for the honor of Christ the Lord and of our God, are celebrated by perpetual services and an annual solemnity, that while our faithful people know the faith of the martyrs, they may also rejoice in their triumphs, and may rest assured that it is by the protection of these that they themselves are to be protected. For it is held in repute that Eusebius the historian, of sacred memory, bishop of the city of Cæsarea, a most blessed priest of excellent life, very learned also in ecclesiastical matters, and to be venerated for his extraordinary carefulness, set forth for every city, in so far as the truth was able to be ascertained, the Holy Spirit announcing the deeds that had been done,--inasmuch as the cities of single provinces and localities or towns have merited being made famous by the heavenly triumphs of martyrs,--set forth, I say, in the time of what rulers the innumerable persecutions were inflicted at the command of officials. Who, although he has not described entire the sufferings of individual martyrs, yet has truly intimated why they ought to be described or celebrated by faithful and devoted Christians. Thus this faithful husbandman has cultivated the grace of God, which has been scattered abroad in all the earth, while, as it were, from a single grain of wheat, plenteous harvests are produced on account of the fertility of the field, and go on in multiplied abundance. So through the narration of the above-mentioned man, diffused from the fountain of a single book, with the ever-spreading writings of the faithful, the celebrating of the sufferings of the martyrs has watered all the earth."
Usuardus in his Martyrology.
"On the twenty-first day of June, in Palestine, the holy Eusebius, bishop and confessor, a man of most excellent genius, and a historiographer."
Notker in his Martyrology.
"On the twenty-first day of June, the deposition in Cæsarea of the holy bishop Eusebius."
Manecharius in his Epistle to Ceraunius, Bishop of Paris.
"Unceasing in thy continual efforts to equal in merit the very excellent persons of the most blessed bishops in all the conversation of the priesthood, zealous to adorn thyself every day with holy religion, by thy zeal for reading thou hast searched through the whole of the doctrines of the sacred Scriptures. Now as an addition to thy praiseworthiness thou dost faithfully purpose, in the city of Paris, to gather together for the love of religion, the deeds of the holy martyrs. Wherefore thou art worthy of being compared in zeal with Eusebius of Cæsarea, and art worthy of being remembered perpetually with an equal share of glory."
From an old Manuscript Breviary of the Lemovicensian Church.
"Of the holy Eusebius, bishop and confessor.
"Lesson 1. Eusebius, bishop of Cæsarea in Palestine, on account of his friendship with Pamphilus the martyr, took from him the surname of Pamphili; inasmuch as along with this same Pamphilus he was a most diligent investigator of sacred literature. The man indeed is very worthy of being remembered in these times, both for his skill in many things, and for his wonderful genius, and by both Gentiles and Christians he was held distinguished and most noble among philosophers. This man, after having for a time labored in behalf of the Arian heresy, coming to the council of Nicæa, inspired by the Holy Spirit, followed the decision of the Fathers, and thereafter up to the time of his death lived in a most holy manner in the orthodox faith.
"Lesson 2. He was, moreover, very zealous in the study of the sacred Scriptures, and along with Pamphilus the martyr was a most diligent investigator of sacred literature. At the same time he has written many things, but especially the following books: The Præparatio Evangelica, the Ecclesiastical History, Against Porphyry, a very bitter enemy of the Christians; he has also composed Six Apologies in Behalf of Origen, a Life of Pamphilus the Martyr, from whom on account of friendship he took his surname, in three books; likewise very learned Commentaries on the hundred and fifty Psalms.
"Lesson 3. Moreover, as we read, after having ascertained the sufferings of many holy martyrs in all the provinces, and the lives of confessors and virgins, he has written concerning these saints twenty books; while on account of these books therefore, and especially on account of his Præparatio Evangelica, he was held most distinguished among the Gentiles, because of his love of truth he contemned the ancestral worship of the gods. He has written also a Chronicle, extending from the first year of Abraham up to the year 300 a.d., which the divine Hieronymus has continued. Finally this Eusebius, after the conversion of Constantine the Great, was united to him by strong friendship as long as he lived."
In the Breviary of the same church, June twenty-first.
"Omnipotent, eternal God, who dost permit us to take part in the festivities in honor of Eusebius, thy holy confessor and priest, bring us, we pray thee, through his prayers, into the society of heavenly joys, through our Lord Jesus Christ," etc. [7]
From the book On the Lights of the Church.
"Eusebius of Cæsarea, the key of the Scriptures and custodian of the New Testament, is proved by the Greeks to be greater than many in his treatises. There are three celebrated works of his which truly testify to this: the Canons of the Four Gospels, which set forth and defend the New Testament, ten books of Ecclesiastical History, and the Chronicon, that is, a chronological summary. We have never found any one who has been able to follow in all his foot-prints."