
This article continues from part II.
Scholastic humanism
Skipping ahead, from the 11th through the 13th century, a new phase of Christian humanism arose – in the thought and work of “scholasticism” – a movement in Christian thought that is understood by historians to have its intellectual foundations in Augustine, its early formulation in the work of Anselm of Canterbury in the 11th century, and its pinnacle in the grand system of Thomas Aquinas in the 13th.
The medieval scholastics continued and intensified the high humanist evaluation of human reason. As historian of science Edward Grant has comprehensively shown, no line can be drawn between the Middle Ages as a supposed “age of faith” and the 17th and 18th century “age of reason,” for both ages shared “the profound conviction that their beliefs could be reasonably demonstrated” and “medieval university scholars and teachers . . . placed a heavy reliance on reason,” and in fact, “in the history of civilization, they were the first to do so self-consciously on a grand scale.” Building on over a millennium of Christian thought about the Genesis portrayal of the imago dei, passed on from patristic thinkers such as Justin Martyr and Augustine of Hippo, the scholastics argued like this:
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