Here is a list which contains most of the important philosophers in chronological order; starting of course with Plato; The most important of which have been emboldened:
**Plato **(Republic)
**Aristotle **(Organon; Prior Analytics; Posterior Analytics)
Epictetus (Discourses)
St Ambrose (De sacramento regenerationis sive de philosophia)
St Augustine (Confessions; City of God)
Proclus (Elements of Theology)
Pseudo-Dionysius the Areopagite (Celestial Hierarchy, Ecclesiastical Hierarchy)
St Isidore of Seville (De differentiis verborum)
St John of Damascus (Fountain of Knowledge)
**Avicenna **(Kitab al-Najat)
St Peter Damian (Divine Omnipotence)
Peter Abelard (Logica ingredientibus)
Peter Lombard (Sentances)
Averroes (Commentaries)
Alexander of Hales (Summa Frateris)
St Bonaventure (Commentaries on Sentances)
St Thomas Aquinas (Summa Theologica)
Henry of Ghent (Quodlibetal Discourses)
Bl. Duns Scotus (Opus Oxoniense, Tractatus de Primo Principio)
William of Ockham (Summa logicae)
William of Alnwick (Additiones magnae)
Francis Mayron (Scripta super libros Sententiarum)
Albert of Saxony (Quaestiones logicales, De quadratura circuli)
Count Giovanni Pico della Mirandola (De hominis dignitate)
