Nicene and Post-Nicene Fathers: Series I/Volume III/Doctrinal Treatises of St. Augustin/On the Holy Trinity/Book XII
Book XII.
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Commencing with a distinction between wisdom and knowledge, points out a kind of trinity, of a peculiar sort, in that which is properly called knowledge, and which is the lower of the two; and this trinity, although it certainly pertains to the inner man, is still not yet to be called or thought an image of God.