It follows from this that there is no sort of existing proof that the Redeemer was actually born on this day. We may add, moreover, that even when this opinion had met with acceptance from many, and in times when Christmas had become one of the popular festivals, there were not wanting some here and there who expressed doubt on the question. This is the case in an ancient sermon on Christmas included among the spurious writings of St Jerome: “Whether our Lord Jesus Christ was baptized to-day, or whether He was born, has given rise to different opinions in the world, and according to the different traditions different views are maintained.”[320] Although this sermon is incorrectly attributed to St Jerome, it nevertheless certainly belongs to his time, for it refers to the gilded temples of Rome (_aurata capitolia_). What then was the amount of knowledge possessed by antiquity concerning the true day of Christ’s birth? It may not be out of place to attempt to answer this question. There are only a few passages in which the oldest writers in the Church refer to the matter, but from these it is easy to see that, even in the earliest times, nothing was known for certain, and that those who were interested in the question did not agree among themselves. This was the case, for example, in Alexandria in the second century. A party existed there who regarded the 25th of the Egyptian month Pachon (_i.e._ 20th May) as the day of our Lord’s birth. The Basilidians of Alexandria, however, observed it on the 15th Tybi (_i.e._ 10th January), and passed the preceding night in devotional readings. The majority celebrated Christ’s birth on the 11th Tybi (_i.e._ 6th January).[321] In a treatise of the third century formerly attributed to St Cyprian, which deals with kindred subjects, a very different view appears. The anonymous writer of this treatise (_De Pascha Computus_), which was composed in A.D. 243, inclines to the view that the 28th March was the true day of Christ’s birth,[322] and, contemporary with this, Hippolytus sets it down on the 25th of the same month, provided this is the correct interpretation of the inscription on his statue. In the fourth and fifth centuries, the view became prevalent that Christ was born on the 25th December, and St Augustine uses expressions which seem to imply he was of this opinion.[323]