Philo of Alexandria
Hellenistic Jewish philosopher (c. 20 BC – c. 50 AD), born in Alexandria into a wealthy, influential Jewish family — his brother was one of the most powerful men in the Egyptian Jewish community — and the key figure who first attempted, with systematic philosophical ambition, to harmonise Hebrew scripture with the Greek philosophical tradition, especially Platonism and Stoicism, opening a path later followed by both the Christian Church Fathers and the great medieval Jewish and Muslim philosophers. Educated in the dominant Greek culture of cosmopolitan Alexandria of his time, yet deeply faithful to his Jewish identity and practice, he developed a method of allegorical interpretation of the Torah whereby biblical narratives, while remaining literally true, also contain a deeper philosophical meaning: Adam and Eve represent mind and the senses, Abraham's journey symbolises the soul's philosophical ascent toward God, and biblical figures embody universal virtues and vices accessible to philosophical reason. His most influential idea for posterity is the concept of the Logos, the divine Word or Reason: for Philo, the Logos is the cosmic intermediary between the transcendent, ineffable God — of whom, following Platonism, he held we can predicate no positive attribute — and the created world, the divine mind containing the archetypes of all things and through which God acts in the world. This notion, though rooted in Greek philosophy, would resonate decisively in the prologue of John's Gospel and in all subsequent Christian trinitarian theology. He led a delegation of Alexandrian Jews before Emperor Caligula to protest against anti-Jewish persecution, an episode he recounted in his work Legatio ad Gaium.