Justin Martyr
c. 100 – 165 · Rome
“For the preaching of the cross is to them that perish foolishness; but unto us which are saved it is the power of God.”
A Greek philosopher who tried several schools of thought before an old man on a beach pointed him to the Hebrew prophets, Justin found in Christianity the fulfillment of everything true in Greek philosophy. He opened one of history's first Christian schools in Rome and was beheaded for refusing to sacrifice to Roman gods.
Read more on Wikipedia ↗Portrait: Theophanes the Cretan · Public domain