The encyclical Studiorum ducem, promulgated 29 June 1923, was written on the occasion of the 6th centenary of the canonization of Thomas Aquinas, whose thought is acclaimed as central to Catholic philosophy and theology.
"Studiorum ducem" ensiklik, diterbitkan 29 Juni 1923, ditulis pada kesempatan keenam abad ke-kanonisasi Thomas Aquinas, yang pemikirannya diakui sebagai filsafat dan teologi sentral ke Katolik.