The greatest of earlier Christian philosophers had been St. Augustine, who saw in Plato (or in Neoplatonism) a system congenial with Christianity. This influence combined with that of the Pseudo-Dionysius (see Dionysius the Areopagite, Saint) to color the speculations of Western thinkers with Neoplatonic ideas. Much knowledge of ancient philosophy came to the early scholastics through the writings of Boethius. John Scotus Erigena continued the tradition of Neoplatonism in the 9th cent., adding to it certain mystical notions of his own.
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