QUSṬĀ IBN LŪQĀ, Epistola sulla differenza tra lo spirito e l'anima (Risālah fī l-faṣl bayn al-rūḥ wa-l-nafs): meglio nota nell'Occidente medievale latino con il titolo «De differentia spiritus et animae» a cura di Michele Meroni e Davide Righi.

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