"...it is not really so much a question of access to the facts, as of attitude to the facts."

It is true that, in most other cases, there was a certain limitation to the data of medieval science; but this certainly had nothing to do with medieval religion. For the data of Aristotle, and the great Greek civilisation, were in many ways more limited still. But it is not really so much a question of access to the facts, as of attitude to the facts. Most of the Schoolmen, if informed by the only informants they had that a unicorn has one horn or a salamander lives in the fire, still used it more as an illustration of logic than an incident of life. What they really said was, "If a Unicorn has one horn, two unicorns have as many horns as one cow." And that has not one inch the less a fact because the unicorn is a fable. But with Albertus in medieval times, as with Aristotle in ancient times, there did begin something like the idea of emphasising the question: "But does the unicorn only have one horn or the salamander a fire instead of a fireside?" Doubtless when the social and geographical limits of medieval life began to allow them to search the fire for salamanders or the desert for unicorns, they had to modify many of their scientific ideas. A fact which will expose them to the very proper scorn of a generation of scientists which has just discovered that Newton is nonsense, that space is limited, and that there is no such thing as an atom.

-St. Thomas Aquinas: The Dumb Ox (1933)