10 Again, as in the distribution of prizes at the public games, he proclaims various crowns to the victors, and invests each with the rewards of different virtues: but for our good emperor, who is clothed in the very robe of piety, he declares that a higher recompense of his toils is prepared; and, as a prelude to this recompense, permits us now to assemble at this festival, which is composed of perfect numbers, of decades thrice, and triads ten times repeated.
11. The first of these, the triad, is the offspring of the unit, while the unit is the mother of number itself, and presides over all months, and seasons, and years, and every period of time. It may, indeed, be justly termed the origin, foundation, and principle of all number, and derives its name from its abiding character. For, while every other number is diminished or increased according to the subtraction or addition of others, the unit alone continues fixed and steadfast, abstracted from all multitude and the numbers which are formed from it, and resembling that indivisible essence which is distinct from all things beside, but by virtue of participation in which the nature of all things else subsists.
12. For the unit is the originator of every number, since all multitude is made up by the composition and addition of units; nor is it possible without the unit to conceive the existence of number at all. But the unit itself is independent of multitude, apart from and superior to all number; forming, indeed, and making all, but receiving no increase from any.
13. Kindred to this is the triad; equally indivisible and perfect, the first of those sums which are formed of even and uneven numbers. For the perfect number two, receiving the addition of the unit, forms the triad, the first perfect compound number. And the triad, by explaining what equality is, first taught men justice, having itself an equal beginning, and middle, and end. And it is also an image of the mysterious, most holy, and royal Trinity, which, though itself without beginning or origin, yet contains the germs, the reasons, and causes of the existence of all created things.
14. Thus the power of the triad may justly be regarded as the first cause of all things. Again, the number ten, which contains the end of all numbers, and terminates them in itself, may truly be called a full and perfect number, as comprehending every species and every measure of numbers, proportions, concords, and harmonies. For example, the units by addition form and are terminated by the number ten; and, having this number as their parent, and as it were the limit of their course, they round this as the goal of their career.
15. Then they perform a second circuit, and again a third, and a fourth, until the tenth, and thus by ten decades they complete the hundredth number. Returning thence to the first starting point, they again proceed to the number ten, and having ten times completed the hundredth number, again they recede, and perform round the same barriers their protracted course, proceeding from themselves back to themselves again, with revolving motion.
16. For the unit is the tenth of ten, and ten units make up a decade, which is itself the limit, the settled goal and boundary of units: it is that which terminates the infinity of number; the term and end of units. Again, the triad combined with the decade, and performing a threefold circuit of tens, produces that most natural number, thirty. For as the triad is in respect to units, so is the number thirty in respect to tens.
17. It is also the constant limit to the course of that luminary which is second to the sun in brightness. For the course of the moon from one conjunction with the sun to the next, completes the period of a month; after which, receiving as it were a second birth, it recommences a new light, and other days, being adorned and honored with thirty units, three decades, and ten triads.
18. In the same manner is the universal reign of our victorious emperor distinguished by the giver of all good, and now enters on a new sphere of blessing, accomplishing, at present, this tricennalian festival, but reaching forward beyond this to far more distant intervals of time, and cherishing the hope of future blessings in the celestial kingdom; where, not a single sun, but infinite hosts of light surround the Almighty Sovereign, each surpassing the splendor of the sun, glorious and resplendent with rays derived from the everlasting source of light.
19. There the soul enjoys its existence, surrounded by fair and unfading blessings; there is a life beyond the reach of sorrow; there the enjoyment of pure and holy pleasures, and a time of unmeasured and endless duration, extending into illimitable space; not defined by intervals of days and months, the revolutions of years, or the recurrence of times and seasons, but commensurate with a life which knows no end. And this life needs not the light of the sun, nor the lustre of the moon or the starry host, since it has the great Luminary himself, even God the Word, the only begotten Son of the Almighty Sovereign.
20. Hence it is that the mystic and sacred oracles reveal him to be the Sun of righteousness, and the Light which far transcends all light. We believe that he illumines also the thrice-blessed powers of heaven with the rays of righteousness, and the brightness of wisdom, and that he receives truly pious souls, not within the sphere of heaven alone, but into his own bosom, and confirms indeed the assurances which he himself has given.
21. No mortal eye has seen, nor ear heard, nor can the mind in its vesture of flesh understand what things are prepared for those who have been here adorned with the graces of godliness; blessings which await you too, most pious emperor, to whom alone since the world began has the Almighty Sovereign of the universe granted power to purify the course of human life: to whom also he has revealed his own symbol of salvation, whereby he overcame the power of death, and triumphed over every enemy. And this victorious trophy, the scourge of evil spirits, you have arrayed against the errors of idol worship, and hast obtained the victory not only over all your impious and savage foes, but over equally barbarous adversaries, the evil spirits themselves.
Source: Oration in Praise of Constantine (New Advent)