5 For if God had given instruction by means of books, and of letters, he who knew letters would have learned what was written; but the illiterate man would have gone away without receiving any benefit from this source, unless some one else had introduced him to it; and the wealthy man would have purchased the Bible, but the poor man would not have been able to obtain it. Again, he who knew the language that was expressed by the letters, might have known what was therein contained; but the Scythian, and the Barbarian, and the Indian, and the Egyptian, and all those who were excluded from that language, would have gone away without receiving any instruction.
This however cannot be said with respect to the heavens; but the Scythian, and Barbarian, and Indian, and Egyptian, and every man that walks upon the earth, shall hear this voice; for not by means of the ears, but through the sight, it reaches our understanding. And of the things that are seen, there is one uniform perception; and there is no difference, as is the case with respect to languages. Upon this volume the unlearned, as well as the wise man, shall be alike able to look; the poor man as well as the rich man; and wherever any one may chance to come, there looking upwards towards the heavens, he will receive a sufficient lesson from the view of them: and the prophet himself intimated and indicated this fact, that the creation utters this voice so as to be intelligible to barbarians, and to Greeks, and to all mankind without exception, when he spoke on this wise; “There is no speech, nor language, where there voice is not heard.” What he means is to this effect, that there is no nation or tongue which is unable to understand this language; but that such is their utterance, that it may be heard of all mankind. And that not merely of the heavens, but of the day and night. But how of the day and night? The heavens, indeed, by their beauty and magnitude, and by all the rest, astonish the beholder, and transport him to an admiration of the Creator; but as to the day and night, what can these show us of the same kind? Nothing certainly of the same kind, but other things which are not inferior to them; as for example; the harmony, and the order which they so accurately observe. For when you consider how they distribute between them the whole year, and mutually divide the length of the whole space, even as if it were by a beam and scales, you will be astonished at Him who has ordered them! For just as certain sisters dividing their father's inheritance among themselves with much affection, and not insulting one another in the smallest degree, even so too the day and the night distribute the year with such an equality of parts, with the utmost accuracy; and keep to their own boundaries, and never push one another aside. Never has the day been long in winter; and in like manner never has the night been long in summer, while so many generations have passed away; but during so great an interval and length of time one has not defrauded the other even in the smallest degree; not of half an hour's space, no, nor of the twinkling of an eye!
Source: Homilies on the Statues (New Advent)