Author
- Petrus Comestor2
- Pierre Bersuire2
- Pietro de' Crescenzi2
- Pius III2
- Plato2
- Plutarch2
- Pseudo-Bonaventure2
- Pseudo-Seneca2
- Qadi Ayyad2
- Qāḍī Zāda al-Rūmī2
- Raymond of Penyafort2
- Richard of Saint Victor2
- Robert Grosseteste2
- Rutilius Taurus Aemilianus Palladius2
- Saʻīd Najm al-Dīn ʻAjamī2
- Sharaf ad-Din Ali Yazdi2
- Sheikh Bedreddin2
- Sicco Polenton2
- Sulpicius Severus2
- Thomas of Cantimpré2