Isis 90 (3):522-553 (
1999)
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Abstract
A peculiarity of early medieval geometrical texts was that alongside Euclid's Elements they transmitted remnants of the corpus of Roman land surveyors and metaphysical digressions extraneous to geometry proper. Rather than dismissing these additions as irrelevant, this essay attempts to elucidate the cultural grounds for the indiscriminate mixture of the three disciplines -- geometry, surveying, and metaphysics. Inquiry into the broader context of early medieval culture suggests that neither geometry nor surveying was treated as an independent discipline. Texts on geometry and surveying were studied mainly because they were thought to provide good opportunities for enlarging the scope of meditation on spiritual subjects. Accordingly, the main concern of this essay is to show how Christian symbolism influenced both the composition and the study of geometrical texts. The essay is based on a wide range of sources: treatises on geometry and surveying, pictorial representations of Creation, and philosophical literature in which geometry was used in arguments about ontological doctrines.