2 These men does the Book of wisdom reprove, where it is said, “For if they were able to know so much as to aim at the world, how did they not sooner find out the Lord thereof?” They are accused as wasting their time and their busy disputes in investigating and measuring as it were the creature; they sought out the courses of the stars, the intervals of the planets, the movements of the heavenly bodies, so as to arrive by certain calculations to that degree of knowledge as to foretell the eclipses of the sun and moon; and that as they had foretold, so should the event be according to the day and hour, and to the portion of the bodies which should be eclipsed.
Great industry, great activity of mind. But in these things they sought after the Creator, who was not far off from them, and they found Him not. Whom if they could have found, they might have had within them. With the best reason then, and very rightly were they accused, who could investigate the numbers of the stars, and their varied movements, and know and foretell the eclipses of the luminaries: rightly accused, I say, in that they found not Him by whom these had been created and ordained, because they neglected to seek Him.
But be not much disquieted, if you are ignorant of the courses of the stars, and the proportions of the celestial and terrestrial bodies. Behold the fair beauty of the world, and praise its Creator's counsel. Behold what He has made, and love Him who made it: be this your greatest care. Love Him who made it; for He made you also after His own image, that you might love Him.
Source: Sermons on Selected Lessons of the New Testament (New Advent)