7 Take then all the best things, and clothe yourself with them; for you are indeed king of the irrationals; but kings, if there be any thing excellent possessed by their subjects, be it gold or silver, or precious stones, or sumptuous vestments, usually possess the same in greater abundance. From the creation also, learn to admire your Lord! And if any of the things you see exceed your comprehension, and you are not able to find the reason thereof, yet for this glorify the Creator, that the wisdom of these works surpasses your understanding.
Say not, wherefore is this? Or, to what end? For everything is useful, even if we know not the reason of it. As therefore, if you go into a surgery, and see many instruments lying before you, you wonder at the variety of the implements though ignorant of their use; so also act with respect to the creation. Although you see many of the animals, and of the herbs, and plants, and other things, of which you know not the use, admire the variety of these; and feel astonishment for this reason at the perfect workmanship of God; that He has neither made all things manifest to you, nor permitted all things to be unknown.
For He has not permitted all things to be unknown, lest you should say, that the things that exist are not of providence. He has not permitted all things to be known to you, lest the greatness of your knowledge should excite you to pride. Thus at least it was that the evil demon precipitated the first man headlong and by means of the hope of greater knowledge, deprived him of that he already possessed. Therefore also, a certain wise man exhorts, saying, “Seek not out the things that are too hard for you; neither search the things that are too deep for you.
But what is commanded you, think thereupon with reverence; for the greater part of His works are done in secret.” And again; “More things are showed unto you than men understand.” But this he speaks for the purpose of consoling the man who is sad and vexed, because he does not know all things; for even those things he observes, which you are permitted to know, greatly surpass your understanding; for you could not have found them by yourself, but you have been taught them of God.
Wherefore be content with the wealth given you, and do not seek more; but for what you have received give thanks; and do not be angry on account of those things which you have not received. And, for what you know, give glory, and do not stumble at those things of which you are ignorant. For God has made both alike profitably; and has revealed some things, but hidden others, providing for your safety.
Source: Homilies on the Statues (New Advent)