  Almost nothing is known about the life of Thomas of Erfurt except that he was active as a teacher and philosopher in the first quarter of the fourteenth  century.[1]  Presumably, he came from the city of Erfurt in present-day Germany. His work shows the influence of the Paris Arts Masters Radulphus Brito (ca. 1270–1320) and Siger of Courtrai (ca. 1280–1341), which suggests that he was educated and perhaps also taught at the University of  Paris.[2]  Later documents associate him with the school of St. Severus and the Schottenkloster of St. Jacob at  Erfurt.[3]  His most famous grammatical text, De modis significandi (On the Modes of Signifying) was known by 1310 and was already being commented upon by 1324. It is possible that he returned to Paris a number of times over the course of his academic career, although there are no records attesting to this.