The “scholastics” is what we call the leading churchmen-scholars in the Middle Ages. These religious thinkers used the logical methods of their time to debate complex, often abstract theological issues, many of which were premised on faith. This is also known as Scholasticism.
The scholastics never asked “how many angels can stand on the head of a pin.” But this question is often cited to satirize their approach, which to critics seems arbitrary and metaphysically excessive.
The influential scholastic St. Thomas Aquinas adapted arguments from (the Greek pre-Christian) Aristotle into a Christian network of beliefs. Interestingly, Aristotle’s voluminous works were translated from the Greek into Latin by Arab scholars.
After some kind of direct encounter with God near the end of his life, Aquinas apparently said that his many writings were like a “house of straw.” In other words, worthless compared to direct experience. Nevertheless, his arguments, many of which seem to be couched in ancient and medieval ways of understanding, are often cited to illustrate and (apparently) legitimize Catholic teachings.
Perhaps the abstract intellectualism and intense quibbling of the scholastics lost sight of basic Christian teaching of loving God and one another. And for one person to believe he or she can definitively speak about God, no matter how cleverly, seems quite arrogant from a contemporary standpoint.
¹ Wikipedia lists several more whom I’ve encountered but not really had the time to study.