Titus Flavius Clemens, also known as Clement of Alexandria (ca. 150 – ca. 215), was a Christian theologian who taught at the Catechetical School of Alexandria. A convert to Christianity, he was an educated man who was familiar with classical Greek philosophy and literature. Clement was influenced by Hellenistic philosophy to a greater extent than any other Christian thinker of his time. Among his pupils were Origen and Alexander of Jerusalem.
Clement is usually regarded as a Church Father. He is venerated as a saint in Coptic Christianity, Ethiopian Christianity and Anglicanism. He was previously revered in the Roman Catholic Church, but his name was removed from the Roman Martyrology in 1586 by Pope Sixtus V.
Neither Clement's birthdate or birthplace is known with any degree of certainty. It is conjectured that he was born sometime around 150 AD. According to Epiphanius Scholasticus, he was born in Athens, but there is also a tradition that he was born in Alexandria.
His parents were pagans, and Clement was a convert to Christianity. In the Protrepticus he displays an extensive knowledge of Greek mythology and mystery religions, which could only have arisen from the practice of his family's religion.
Having rejected paganism as a young man due to its perceived moral corruption, he travelled in Greece, Asia Minor, Palestine and Egypt. In Greece, he encountered an Ionian theologian, who has been identified as Athenagoras of Athens; while in the east, he was taught by an Assyrian, sometimes identified with Tatian, and a Jew, who was possibly Theophilus of Caesarea.
In around 180, Clement reached Alexandria. Clement studied under Pantaenus, and was ordained to the priesthood by Pope Julian before 189.
During the Severian persecutions of 202–203, Clement left Alexandria. In 211, Alexander of Jerusalem wrote a letter commending him to the Church of Antioch, which may imply that Clement was living in Cappadocia or Jerusalem at that time. The date and location of his death are unknown.