Thomas entered the Augustinian Order at Haguenau and taught at Strasbourg for several years.
About the year 1337 he went to Paris, where he obtained his doctorate in theology and became famous as a teacher in the university.
In 1345 he was elected general of the Augustinian Order, a position he would hold for the rest of his life.
His best known work is a commentary on the Books of Sentences of Peter Lombard, published at Strasbourg in 1490 (other editions: Venice, 1564 and 1588; Genoa, 1585; Geneva, 1635).
As a teacher and commentator he adhered closely to the doctrines of Giles of Rome, who since 1287 had been recognized as the doctor ordinis of the Augustinians.