Original Contributions
His original contribution to philosophy was De essentiis (On essences). In this work Herman deals with five Aristotelian categories (causa, motus, spatium, tempus, habitudo). He started to write this treatise in 1143 in Toulouse and he completed it the same year in Béziers. In 1982 this book was reprinted in Germany.
Some other works are believed to be Herman's:
- meteorological Liber imbrium (A book about precipitations) (1140 to 1141)
- astrological De indagatione cordis (About heart researches) (after 1140)
In the text (or a manuscript, the syntax of this article was not clear) of De indagatione cordis there are many names of scientists and scholars whose work Herman knew and used: Abu Mas'har (787–886), Sahl ibn Bishr, Aomar Tiberia, Abu al-Kindi (801–873), the eighth-century Jewish astrologer Al Batrig Mashallah (Messahalla), Hermes, and Dorotheos of Sidon.
- mathematical and astronomical De mensura, De utilitatibus astrolabii, De compositione et usu astrolabii (before 1143 – Herman was certainly interested in the Astrolabe – the portrait shows Herman with one)
Many medieval authors refer to Herman's work, for instance Albert the Great (Albert von Bollstädt, Albertus Magnus), instructor to Thomas Aquinas, in his work Speculum astronomiae.
Read more about this topic: Herman Of Carinthia
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