Abstract
The purpose of this essay is to identify the theological comprehension of the Word as Creator in the action of the Trinity, which Thierry of Chartres offers in his Tractatus de sex dierum operibus. In his brief and synthetic explanation, he makes coincide the findings of human reason with biblical notions, such as Figure and splendor, Wisdom, Truth, Word, not as a mere sequence but in their deep and relational meaning. Thierry’s rational method is deductive-mathematical, whereas the philosophical premise is the rerum universitas articulated in levels of necessity and possibility. All this allows creation to be considered as explication of the complicatio—or multiplicity produced by unity— which is typical of the chartrian neoplatonism, with the characteristic seal of Thierry.