XXVI. If this knowledge has come within your reach and you are familiar with these branches of science, look at the differences of plants also, up to the artistic fashion of the leaves, which is adapted both to give the utmost pleasure to the eye, and to be of the greatest advantage to the fruit. Look too at the variety and lavish abundance of fruits, and most of all at the wondrous beauty of such as are most necessary. And consider the power of roots, and juices, and flowers, and odours, not only so very sweet, but also serviceable as medicines; and the graces and qualities of colours; and again the costly value, and the brilliant transparency of precious stones. Since nature has set before you all things as in an abundant banquet free to all, both the necessaries and the luxuries of life, in order that, if nothing else, you may at any rate know God by His benefits, and by your own sense of want be made wiser than you were. Next, I pray you, traverse the length and breadth of earth, the common mother of all, and the gulfs of the sea bound together with one another and with the land, and the beautiful forests, and the rivers and springs abundant and perennial, not only of waters cold and fit for drinking, and on the surface of the earth; but also such as running beneath the earth, and flowing under caverns, are then forced out by a violent blast, and repelled, and then filled with heat by this violence of strife and repulsion, burst out little by little wherever they get a chance, and hence supply our need of hot baths in many parts of the earth, and in conjunction with the cold give us a healing which is without cost and spontaneous. Tell me how and whence are these things? What is this great web unwrought by art? These things are no less worthy of admiration, in respect of their mutual relations than when considered separately.
How is it that the earth stands solid and unswerving? On what is it supported? What is it that props it up, and on what does that rest? For indeed even reason has nothing to lean upon, but only the Will of God. And how is it that part of it is drawn up into mountain summits, and part laid down in plains, and this in various and differing ways? And because the variations are individually small, it both supplies our needs more liberally, and is more beautiful by its variety; part being distributed into habitations, and part left uninhabited, namely all the great height of Mountains, and the various clefts of its coast line cut off from it. Is not this the clearest proof of the majestic working of God?
XXVII. And with respect to the Sea even if I did not marvel at its greatness, yet I should have marvelled at its gentleness, in that although loose it stands within its boundaries; and if not at its gentleness, yet surely at its greatness; but since I marvel at both, I will praise the Power that is in both. What collected it? What bounded it? How is it raised and lulled to rest, as though respecting its neighbour earth? How, moreover, does it receive all the rivers, and yet remain the same, through the very superabundance of its immensity, if that term be permissible? How is the boundary of it, though it be an element of such magnitude, only sand? Have your natural philosophers with their knowledge of useless details anything to tell us, those men I mean who are really endeavouring to measure the sea with a wineglass, and such mighty works by their own conceptions? Or shall I give the really scientific explanation of it from Scripture concisely, and yet more satisfactorily and truly than by the longest arguments? “He has fenced the face of the water with His command.” This is the chain of fluid nature. And how does He bring upon it the Nautilus that inhabits the dry land (i.e., man) in a little vessel, and with a little breeze (do you not marvel at the sight of this—is not your mind astonished?), that earth and sea may be bound together by needs and commerce, and that things so widely separated by nature should be thus brought together into one for man? What are the first fountains of springs? Seek, O man, if you can trace out or find any of these things. And who was it who cleft the plains and the mountains for the rivers, and gave them an unhindered course? And how comes the marvel on the other side, that the Sea never overflows, nor the Rivers cease to flow? And what is the nourishing power of water, and what the difference therein; for some things are irrigated from above, and others drink from their roots, if I may luxuriate a little in my language when speaking of the luxuriant gifts of God.
XXVIII. And now, leaving the earth and the things of earth, soar into the air on the wings of thought, that our argument may advance in due path; and thence I will take you up to heavenly things, and to heaven itself, and things which are above heaven; for to that which is beyond my discourse hesitates to ascend, but still it shall ascend as far as may be. Who poured forth the air, that great and abundant wealth, not measured to men by their rank or fortunes; not restrained by boundaries; not divided out according to people's ages; but like the distribution of the Manna, received in sufficiency, and valued for its equality of distribution; the chariot of the winged creation; the seat of the winds; the moderator of the seasons; the quickener of living things, or rather the preserver of natural life in the body; in which bodies have their being, and by which we speak; in which is the light and all that it shines upon, and the sight which flows through it? And mark, if you please, what follows. I cannot give to the air the whole empire of all that is thought to belong to the air. What are the storehouses of the winds? What are the treasuries of the snow? Who, as Scripture has said, has begotten the drops of dew? Out of Whose womb came the ice? And Who binds the waters in the clouds, and, fixing part in the clouds (O marvel!) held by His Word though its nature is to flow, pours out the rest upon the face of the whole earth, and scatters it abroad in due season, and in just proportions, and neither suffers the whole substance of moisture to go out free and uncontrolled (for sufficient was the cleansing in the days of Noah; and He who cannot lie is not forgetful of His own covenant);...nor yet restrains it entirely that we should not again stand in need of an Elias to bring the drought to an end. If He shall shut up heaven, it says, who shall open it? If He open the floodgates, who shall shut them up? Who can bring an excess or withhold a sufficiency of rain, unless he govern the Universe by his own measures and balances? What scientific laws, pray, can you lay down concerning thunder and lightning, O you who thunder from the earth, and cannot shine with even little sparks of truth? To what vapours from earth will you attribute the creation of cloud, or is it due to some thickening of the air, or pressure or crash of clouds of excessive rarity, so as to make you think the pressure the cause of the lightning, and the crash that which makes the thunder? Or what compression of wind having no outlet will account to you for the lightning by its compression, and for the thunder by its bursting out?
Now if you have in your thought passed through the air and all the things of air, reach with me to heaven and the things of heaven. And let faith lead us rather than reason, if at least you have learned the feebleness of the latter in matters nearer to you, and have known reason by knowing the things that are beyond reason, so as not to be altogether on the earth or of the earth, because you are ignorant even of your ignorance.
Source: Orations (New Advent)