Ammonius Saccas

Ammonius Saccas (; Ancient Greek: Ἀμμώνιος Σακκᾶς; 175–243 AD) was a Hellenistic Neoplatonic self-taught philosopher from Alexandria, Roman Egypt, generally regarded as the precursor of Neoplatonism or one of its founders. He is mainly known as the teacher of Plotinus, whom he taught from 232 to 243. He was undoubtedly the most significant influence on Plotinus in his development of Neoplatonism, although little is known about his own philosophical views. Later Christian writers stated that Ammonius was a Christian, but it is now generally assumed that there was a different Ammonius of Alexandria who wrote biblical texts.

Source: Wikipedia — https://en.wikipedia.org/wiki/Ammonius_Saccas