Author
- Pietro Bembo1
- Pliny the Younger1
- Pseudo-Bonaventure1
- Pseudo-Cicero1
- Pseudo-Joachim of Fiore1
- Ptolemy1
- Raymond of Penyafort1
- Richard de Fournival1
- Roberto Caracciolo1
- Saadia Gaon1
- Saʻīd ibn Hibat Allāh ibn al-Ḥusayn1
- Sebastian Schindler1
- Shnorhali Sargis1
- Simon Bredon1
- Simone d' Angelo1
- Spain1
- Terence1
- Thomas Aquinas1
- Titus Livius1
- Tommaso Giovanni Alamanni1