Jakub of Gostynin was one of the chief adherents of the Cologne-style Thomism, a philosophical school that upheld the legacy of work and thought of Thomas Aquinas.[2] Jakub's main work, entitled "Theoremata seu propositiones Auctoris Causarum",[3] was a commentary to Liber de Causis attributed to the Greek philosopher Aristotle. He also wrote a commentary to Metaphysics by Aristotle entitled: "Expositiosuper I–XII libros „Metaphysicae” Aristotelis" as well as to his Physics.[4] He contributed to commentaries by Paul of Venice (Paweł z Wenecji) to On the Soul (or "De Anima") by Aristotle and the theological works of Jan Versor. Jakub of Gostynin is also the author of commentaries on the Gospel of John. He donated his extensive library of manuscripts of philosophy, theology and language to the University of Kraków, the city where he died.
^Władysław Tatarkiewicz, Zarys dziejów filozofii w Polsce (A Brief History of Philosophy in Poland), [in the series:] Historia nauki polskiej w monografiach (History of Polish Learning in Monographs), [volume] XXXII, Kraków, Polska Akademia Umiejętności (Polish Academy of Learning), 1948. This monograph draws from pertinent sections in earlier editions of the author's Historia filozofii (History of Philosophy), pp. 6–7.
^Jagiellonian Library catalogue number: Kr 1507; wyd. kryt. P. Góra, MHFS 11 (1969), 11–162 (frg. w: Filozofia i myśl społeczna XIII–XV wieku, Wwa 1978,462–476)
^Jagiellonian Library catalogue: rps BJ 505 i 2010; Komentarz do „Fizyki”. Wstęp, w: Filozofia i myśl społeczna [...], 445–461
