Orthodoxus. The old man of Ithaca, according to the legend of the Greeks, when he wished to hear the song of the Sirens, on account of the charm of their voluptuous voice, sailed to Sicily in bonds, and stopped up the ears of his companions; not that he grudged them the hearing, or desired to load himself with bonds, but because the consequence of those singers' music to those who heard it was death. For such, in the opinion of the Greeks, are the charms of the Sirens. Now I am not within hearing of any such song as this; nor have I any desire to hear the Sirens who chant men's dirges, and whose silence is more profitable to men than their voice; but I pray to enjoy the pleasure of a divine voice, which, though it be often beard, I long to hear again; not that I am overcome with the charm of a voluptuous voice, bat I am being taught divine mysteries, and expect as the result, not death but eternal salvation. For the singers are not the deadly Sirens of the Greeks, but a divine choir of prophets, with whom there is no need to stop the ears of one's companions, nor to load one's-self with bonds, in fear of the penalty of hearing. For, in the one case, the hearer, with the entrance of the voice, ceases to live; in the other, the more he hears, the better life will he enjoy, being led onwards by a divine Spirit. Let every one come, then, and hear the divine song without any fear. There are not with us the Sirens from the shore of Sicily, nor the bonds of Ulysses, nor the wax poured melting into men's ears; but a loosening of all bonds, and liberty to listen to every one that approaches. For it is worthy of us to hear such a song as this; and to hear such singers as these, seems to me to be a thing to be prayed for. But if one wishes to hear the choir of the apostles as well, he will find the same harmony of song. For the others sang beforehand the divine plan in a mystical manner; but these sing an interpretation of what has been mystically announced by the former. Oh, concordant harmony, composed by the Divine Spirit! Oh, the comeliness of those who sing of the mysteries of God? Oh. that I also may join in these songs in my prayer. Let us then also sing the like song, and raise the hymn to the Holy Father, glorifying in the Spirit Jesus, who is in His bosom.
Shun not, man, a spiritual hymn, nor be ill-disposed to listen to it. Death belongs not to it; a story of salvation is our song. Already I seem to taste better enjoyments, as I discourse on such subjects as these; and especially when there is before me such a flowering meadow, that is to say, our assembly of those who unite in singing and hearing the divine mysteries. Wherefore I dare to ask you to listen to me with ears free from all envy, without imitating the jealousy of Cain, or persecuting your brother, like Esau, or approving the brethren of Joseph, because they, hated their brother on account of his words; but differing far from all these, insomuch that each of you is used to speak the mind of his neighbour. And, on this account, there is no evil jealousy among you, as you have undertaken to supply your brother's deficiencies. O noble audience, and venerable company, and spiritual food! That I may ever have a right to share in such pleasures, be this my prayer!
Valentinian. As I was walking yesterday evening, my friend, along the shore of the sea, and was gazing on it somewhat intently, I saw an extraordinary instance of divine power, and a work of art produced by wise science, if at least such a thing may be called a work of art. For as that verse of Homer says—“As when two adverse winds blowing from Thrace, Boreas and Zephyrus, the fishy deep Vex sudden, all around, the sable flood High curled, flings forth the salt weed on the shore;”— So it seemed to me to have happened yesterday. For I saw waves very like mountain-tops, and, so to speak, reaching up to heaven itself. Whence I expected nothing else but that the whole land would be deluged, and I began to form in my mind a place of escape, and a Noah's ark. But it was not as I thought; for, just as the sea rose to a crest, it broke up again into itself, without overstepping its own limits, having, so to speak, a feeling of awe for a divine decree. And as oftentimes a servant, compelled by his master to do something against his will, obeys the command through fear, while he dares not say a word of what he suffers in his unwillingness to do it, but, full of rage, mutters to himself—somewhat so it appeared to me that the sea, as if enraged and confining its awe within itself, kept itself under, as not willing to let its Master perceive its anger.
On these occurrences I began to gaze in silence, and wished to measure in my mind the heaven and its sphere. I began to inquire whence it rises and where it sets; also what sort of motion it had— whether a progressive one, that is to say, one from place to place, or a revolving one; and, besides, how its movement is continued. And, of a truth, it seemed worth while to inquire also about the sun—what is the manner of his being set in the heaven; also what is the orbit he traverses; also whither it is that, after a short time, he retires; and why it is that even he does not go out of his proper course: but he, too, as one may say, is observing a commandment of a higher power, and appears with us just when he is allowed to do so, and departs as if he were called away.
So, as I was investigating these things, I saw that the sunshine was departing, and the daylight failing, and that immediately darkness came on; and the sun was succeeded by the moon, who, at her first rising, was not of full size, but after advancing in her course presented a larger appearance. And I did not cease inquiring about her also, but examined the cause of her waning and waxing, and why it is that she, too, observes the revolution of days; and it seemed to me from all this that there is a divine government and power controlling the whole, which we may justly call God.
And thereupon I began to praise the Creator, as I saw the earth fast fixed, and living creatures in such variety, and the blossoms of plants with their many hues. But my mind did not rest upon these things alone; but thereupon I began to inquire whence they have their origin— whether from some source eternally co-existent with God, or from Himself alone, none co-existing with Him; for that He has made nothing out of that which has no existence appeared to me the right view to take, unless my reason were altogether untrustworthy. For it is the nature of things which come into being to derive their origin from what is already existing. And it seemed to me that it might be said with equal truth, that nothing is eternally co-existent with God distinct from Himself, but that whatever exists has its origin from Him, and I was persuaded of this also by the undeniable disposition of the elements, and by the orderly arrangement of nature about them.
Source: Concerning Free Will (New Advent)