Porphyry

https://en.wikipedia.org/wiki/Porphyry_(philosopher)

Porphyry of Tyre (/ˈpɔːrfɪri/; Greek: Πορφύριος, Porphýrios; Arabic: فرفوريوس‎, Furfūriyūs; c. 234 – c. 305 AD) was a Phoenician Neoplatonic philosopher born in Tyre, Roman Syria during Roman rule. He edited and published The Enneads, the only collection of the work of Plotinus, his teacher. His commentary on Euclid's Elements was used as a source by Pappus of Alexandria.

He wrote original works on a wide variety of topics, ranging from music to Homer to vegetarianism.[b] His Isagoge, or Introduction, an introduction to logic and philosophy,[c] was the standard textbook on logic throughout the Middle Ages in its Latin and Arabic translations. Through works such as Philosophy from Oracles and Against the Christians (which was banned by Constantine the Great), he was involved in a controversy with early Christians.