Porphyry of Tyre (/ˈpɔːrfɪri/; Greek: Πορφύριος, Porphýrios; Arabic: فُرْفُورِيُوس, Furfūriyūs; c. 234 – c. 305 AD) was a Neoplatonic philosopher born in Tyre, Roman Phoenicia[1] during Roman rule.[a][1][2] He edited and published The Enneads, the only collection of the work of Plotinus, his teacher.
He wrote original works in the Greek language on a wide variety of topics, ranging from music theory 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.[3] Porphyry was, and still is, also well-known for his anti-Christian polemics.[4] Through works such as Philosophy from Oraclesand Against the Christians (which was banned by Constantine the Great),[5] he was involved in a controversy with early Christians.