Dietrich
medievalDominican Scholasticism1240 – 1318
Dietrich of Freiberg (c. 1240–c. 1318) was a German Dominican friar, theologian, and natural philosopher who produced a remarkably original synthesis of Neoplatonism and Aristotelian metaphysics. He is notable both for his sophisticated treatment of intellect and being and for his scientific work on optics, including a geometrical explanation of the rainbow that anticipated later discoveries. His metaphysical writings engage deeply with questions of predication, quiddity, and the structure of composite substances.
Notable Achievements
1
Developed a Neoplatonic theory of intellect grounding being in intellectual self-reflexivity
2
Produced the first geometrically correct explanation of the primary and secondary rainbow
3
Articulated a rigorous account of predication and quiddity applied to composite substances
4
Synthesized Proclean Neoplatonism with Aristotelian categories within a Christian theological framework
5
Influenced later German speculative mysticism, including Meister Eckhart