 Simplicius of Cilicia (ca. 480–560 CE), roughly a contemporary of John Philoponus, is without doubt the most important Neoplatonic commentator on Aristotle and one of the two most influential exegetes within the Aristotelian tradition, along with Alexander of Aphrodisias (around 200 CE). Simplicius’ works are an unmatched source for the intellectual traditions that preceded him: Presocratic, Platonic, and especially the Peripatetic tradition. He is also an independent thinker in his own right, with a coherent philosophical agenda. Best known for his tendency to harmonise Plato and Aristotle, he nevertheless criticised Aristotle on several occasions and considered himself a loyal follower of Plato. Writing in an age when Christianity was the dominant religious and political view, Simplicius aimed to show that the Hellenic tradition is not only much older, but also more venerable and more coherent than the Christian tradition. Unimpressed by charges of alleged contradictions among Greek philosophers, Simplicius repeatedly proclaimed that “the ancient wisdom (palaia philosophia) remains unrefuted” (In Phys. 77.11). It is also noteworthy that, like Proclus and other Neoplatonists, Simplicius presents himself as a thinker for whom philosophy and theology form a complete unity. As has frequently been observed, Simplicius’ works, despite their scholarly outlook, have an important spiritual dimension (see  §5).