The following from the 1917 Pio-Benedictine Code of Canon law requires seminary professors and religious to formally study the writings of Aquinas:
Canon 589
§ 1. Religious correctly instructed in lower disciplines
shall diligently pursue philosophical studies for at least two years and sacred
theology for at least four years, adhering to the teachings of D[om] Thomas
according to the norm of Canon 1366, § 2, according to the instructions of the
Apostolic See.
Edward N. Peters, The 1917 or Pio-Benedictine Code of Canon
Law: In English Translation with Extensive Scholarly Apparatus (San Francisco:
Ignatius Press, 2001), 227.
§ 1. Religiosi in inferioribus disciplinis rite instructi,
in philosophiae studia saltem per biennium et sacrae theologiae saltem per
quadriennium, doctrinae D. Thomae inhaerentes ad normam can. 1366, § 2,
diligenter incumbant, secundum instructiones Apostolicae Sedis.
Benedicti Papae XV and PII X Pontificis Maximi, Codex Iuris
Canonici (Neo-Eboraci: P. J. Kenedy & Sons, 1918), 170.
Canon 1366
§ 2. Professors shall treat studies in rational theology and
philosophy and the instruction of students in these disciplines according to
the system, teaching, and principles of the Angelic Doctor and hold to them
religiously.
Edward N. Peters, The 1917 or Pio-Benedictine Code of Canon
Law: In English Translation with Extensive Scholarly Apparatus (San Francisco:
Ignatius Press, 2001), 460.
§ 2. Philosophiae rationalis ac theologiae studia et
alumnorum in his disciplinis institutionem professores omnino pertractent ad
Angelici Doctoris rationem, doctrinam et principia, eaque sancte teneant.
Benedicti Papae XV and PII X Pontificis Maximi, Codex Iuris
Canonici (Neo-Eboraci: P. J. Kenedy & Sons, 1918), 398.
