From my 2010 book, Science and Christianity: Close Partners or Mortal Enemies? (pp. 19-28). Follow the link for book and purchase information: available for as low as $2.99. I have not checked all the links. Some may be defunct after nine years. Generally, Amazon, Google Books, and Wikipedia links are pretty stable and unchanging.
[New Introduction] Many people (particularly atheists) seem to have this notion that the early Church and the Church fathers were hostile to empirical inquiry, the study of processes of the natural world, and science (such as it existed at all in those times), and even lacked intellectual curiosity about such matters. The “dark ages” (so we are told) was supposedly caused by Christianity (another huge and ridiculous myth). The historical truth is quite otherwise, as I shall show in this paper and a follow-up one.
Christians and Church fathers were as “scientific” as anyone else (if not much more so), and certainly we could find much error and folly among the pagan thinkers of this period: if anyone is inclined to do a fair-minded comparison. Atheists are too often inclined to highlight the scientific errors of historic Christians and the truths held by pagans and non-Christians (in other words, a double standard presentation). I’m in favor of highlighting the whole truth and nothing but the truth, rather than doing a silly, cynical selective analysis specifically designed to make Christians look like anti-scientific troglodyte ignoramuses.
In a momentous move, Clement of Alexandria (ca. 150-ca. 215) and his disciple Origen of Alexandria (ca. 185-ca. 254) laid down the basic approach that others would follow. Greek philosophy was neither inherently good nor bad, but was one or the other depending on how it was used by Christians. . . . Philosophy and science could be studied as “handmaidens to theology” . . . The handmaiden concept of Greek learning was widely adopted and became the standard Christian attitude toward secular learning. That Christians chose to accept pagan learning within limits was a momentous decision. . . . Their education was heavily infiltrated by Latin and Greek pagan literature and philosophy. . . . Christians realized that they could not turn their backs on Greek learning. (Edward Grant, [Cambridge, 1996], )
On a spectrum of pagan values, from cosmic religion to Gnostic repudiation of the cosmos, the church fathers chose a middle position. There can be no doubt that biblical teaching about the creation as God’s handiwork was influential in determining where on the spectrum Christians would land, and therefore it is clear that their Christianity was highly relevant to the issue . . . It seems unlikely, therefore, that the advent of Christianity did anything to diminish the support given to scientific activity or the number of people involved in it. (David Lindberg, in Lindberg and Ronald Numbers, editors, [Univ. of California Press, 1986], )
Other historians have pointed out that although the Church Fathers subordinated the claims of science to the demands of faith, they rarely rejected Greco-Roman science and philosophy outright. . . . The dominant position was somewhere between that of Tertullian and Gregory [Nazianzus]: science and human reason in general were useful to the Christian as long as knowledge about the natural world never supplanted love of God or contradicted the tenets of religious belief. (Elspeth Whitney, [Greenwood, 2004], )
[T]he vast majority of Christian leaders looked favorably on the Greco-Roman medical tradition, viewing it as a divine gift, an aspect of divine providence, the use of which was legitimate and perhaps even obligatory. Basil of Caesarea (ca. 330-79) spoke for many of the church fathers when he wrote that “we must take great care to employ this medical art, if it should be necessary . . .”
[H]ow did the presence and influence of the Christian church affect knowledge of, and attitudes toward, nature? The standard answer, developed in the eighteenth and nineteenth centuries and widely propagated in the twentieth, maintains that Christianity presented serious obstacles to the advancement of science and, indeed, sent the scientific enterprise into a tailspin from which it did not recover for more than a thousand years. The truth, as we shall see, is dramatically different, far more complicated, and a great deal more interesting. . .
Naturally enough, the kind and level of education and intellectual effort favored by the church fathers was that which supported the mission of the church as they perceived it. But this mission, interestingly, did not include the suppression of scientific investigations and ideas.
If we compare the early church with a modern research university or the National Science Foundation, the church will prove to have failed abysmally as a supporter of science and natural philosophy. But such a comparison is obviously unfair. If, instead, we compare the support given to the study of nature by the early church with the support available from any other contemporary social institution, it will become apparent that the church was the major patron of scientific learning. Its patronage may have been limited and selective, but limited and selective patronage is a far cry from opposition.
The contribution of the religious culture of the early Middle Ages to the scientific movement was thus primarily one of preservation and transmission. The monasteries served as the transmitters of literacy and a thin version of the classical tradition (including science or natural philosophy) through a period when literacy and scholarship were severely threatened. Without them, Western Europe would not have had more science, but less. (David Lindberg, [Univ. of Chicago Press, 2nd ed., 2008], )
(d. c. 101; pope) He accepted a good deal of Greek mathematics and astronomy, including belief that the earth was spherical. Unlike Aristotle, however, for him the earth was not eternal and it was sharply distinguished from the divine. Both the heavens and the earth were created and they were orderly: “the sun, the moon and the dancing stars . . . circle in harmony within the bounds assigned to them.” [source: ]
[T]he catechetical school of Alexandria . . . acquired the character of a Christian academy in which all Greek science was studied and made to do apologetic service in favour of the Christian cause. Under Clement and Origen it reached the acme of its renown . . . (Otto Bardenhewer and Thomas Joseph Shahan, [Herder, 1908], ; see also the citation from Edward Grant above)
For as we ought not to neglect the heavens, and earth, and air, and all such things, because some have wrongly seized upon them, and honour God’s works instead of God: but to real what advantage we can from them for our life and enjoyment . . . from the works of nature apprehending the Worker . . . as we know that neither fire, nor food, nor iron, nor any other of the elements, is of itself most useful, or most harmful, except according to the will of those who use it; and as we have compounded healthful drugs from certain of the reptiles; so from secular literature we have received principles of enquiry and speculation . . . (David Lindberg, in Lindberg and Ronald Numbers, editors, [Univ. of California Press, 1986], p. 29; citing The Panegyric on St. Basil: from the Schaff / Wace 38-volume translation of the Church fathers, vol. 7, 398-399)
(c. 330-379; bishop and Doctor of the Church) In contrast to Aristotle, he believed the heavens and the earth were made up of the same materials: earth, air, fire and water, and also questioned the Aristotelian view that divine spirits in the heavenly bodies must continue imparting motion directly to everything that moves. By analogy with a child’s top, he spoke of the heavenly bodies, “which after the first impulse, continue their revolutions, turning upon themselves when once fixed in their centre; thus nature, receiving the impulse of this first command, follows without interruption the course of the ages”. Basil’s spinning top provides an early formulation of the idea of impetus. His views on creation allow for the principle of the conservation of momentum, or of inertia, that appeared repeatedly in Christian thinkers over the next twelve centuries. [source: ] He believed in a spherical earth. 
”If you observe carefully the members even of the animals, you will find that the Creator has added nothing superfluous, and that He has not omitted anything necessary.” He drew lessons from the migration of fish, the stealth of the octopus, the function of the elephant’s trunk, the behavior of dogs tracking wild animals, and the existence of both poisonous and edible plants. All play their designated role in nature, even poisonous plants, for as Basil argued, “there is no one plant without worth, not one without use. Either it provides food for some animal, or has been sought out for us by the medical profession for the relief of certain diseases.” Thus did Basil respond to those who wondered why God would create poisonous plants capable of killing humans. (Edward Grant, [Cambridge, 1996], ; primary sources unable to be accessed in Google Books)
As, when the sun shines above the earth, the shadow is spread over its lower part, because its spherical shape makes it impossible for it to be clasped all round at one and the same time by the rays, and necessarily, on whatever side the sun’s rays may fall on some particular point of the globe, if we follow a straight diameter, we shall find shadow upon the opposite point, and so, continuously, at the opposite end of the direct line of the rays shadow moves round that globe, keeping pace with the sun, so that equally in their turn both the upper half and the under half of the earth are in light and darkness. ()
[H]is work is full of observation of the facts of the natural world. He has minute descriptions of quails and storks and swallows, of bees and crickets, of trees and their modes of reproduction, of evaporation and the action of rain, of human anatomy and physiology. (Edward K. Rand, [New York: Dover Publications, 1957; originally 1928, 93)
(354-430; bishop and Doctor of the Church) He was the dominant thinker of the first thousand years of Christian history. For him, the universe, being the creation of God, was not eternal but finite in space and time. Time itself had its created beginning. . . . The Greek notion of cyclic returns was ridiculous, and eliminated the possibility of happiness. [source: ] He wrote, about science and Scripture:
Usually, even a non-Christian knows something about the earth, the heavens, and the other elements of this world, about the motion and orbit of the stars and even their size and relative positions, about the predictable eclipses of the sun and moon, the cycles of the years and the seasons, about the kinds of animals, shrubs, stones, and so forth, and this knowledge he hold to as being certain from reason and experience. Now, it is a disgraceful and dangerous thing for an infidel to hear a Christian, presumably giving the meaning of Holy Scripture, talking nonsense on these topics; and we should take all means to prevent such an embarrassing situation, in which people show up vast ignorance in a Christian and laugh it to scorn. The shame is not so much that an ignorant individual is derided, but that people outside the household of faith think our sacred writers held such opinions, and, to the great loss of those for whose salvation we toil, the writers of our Scripture are criticized and rejected as unlearned men. If they find a Christian mistaken in a field which they themselves know well and hear him maintaining his foolish opinions about our books, how are they going to believe those books in matters concerning the resurrection of the dead, the hope of eternal life, and the kingdom of heaven, when they think their pages are full of falsehoods and on facts which they themselves have learnt from experience and the light of reason? Reckless and incompetent expounders of Holy Scripture bring untold trouble and sorrow on their wiser brethren when they are caught in one of their mischievous false opinions and are taken to task by those who are not bound by the authority of our sacred books. For then, to defend their utterly foolish and obviously untrue statements, they will try to call upon Holy Scripture for proof and even recite from memory many passages which they think support their position, although they understand neither what they say nor the things about which they make assertion. (From: [De Genesi ad litteram libri duodecim], Bk. I, ch. 19, 39: , in Ancient Christian Writers [Newman Press, 1982], volume 41, pp. 42-43)
In the same work (p. 33), Augustine refers to the spherical earth:
[T]here was nothing to prevent the massive watery sphere from having day on one side by the presence of light, and on the other side, night by the absence of light. Thus, in the evening, darkness would pass to that side from which light would be turning to the other. (Bk. I, ch. 12, 25)
And he wrote about the moon being illuminated by the sun:
[I]t is not the heavenly body itself that changes but the illumined surface of it. . . . it is always full, though it does not always appear so to the inhabitants of earth. The same explanation holds even if it is illumined by the rays of the sun. . . . It is only when it is opposite the sun that the whole of its illuminated surface is visible to us. (Bk. II, ch. 11, 31, pp. 68-69)
[L]et us . . . wholeheartedly reject all subtleties of astrologers and their so-called scientific observations . . . which they fancy established by their theories. . . . with headstrong impiety they treat evil-doing that is justly reprehensible as if God were to blame as the maker of the stars, and not man as the author of his own sins. . . .
What more absurd and stupid than, after assenting to the foregoing argument, to say that the influence and power of stars is only over the lives of men? Such a theory is refuted by the case of those twins that spend their lives in different circumstances, one prosperous and the other wretched . . .(Bk. II, ch. 17, 35-36, p. 71)
John F. McCarthy elaborates on St. Augustine’s positing of something not unlike theistic evolution:
This theory of primordial packages of forms later to emerge (often referred to by commentators as “seminal reasons”) is certainly developmental, but does not correspond with Darwinian evolution. Essential to Augustine’s theory is the idea that the order later to emerge was instilled by God in the beginning. Augustine also requires subsequent interventions by God to “plant” the forms whose “numbers” had already been instilled. Thus, as St. Thomas [Aquinas] points out, the ability of the earth to produce living forms was visualized by Augustine as a passive potency which disposed the matter to receive the forms but did not create the forms themselves. Augustine’s theory of primordial packages deserves more ample meditation and analysis in another place, especially with reference to theories of the development of living things, . . . Genesis 1:6-8 witnesses in several ways to the creative action of God. As the divine Fashioner of the universe, God guided the energies that He had invested in the primal matter by his creative intervention on the first day to bring the cosmos to its structured state. This is the unfolding of the active potency contained in St. Augustine’s “primordial packages.” But there is also implied in these verses an upward progress in the order of inorganic being which seems to have required additional creative divine interventions. (; see also Parts , , , , and )