Philo of Alexandria

An old philosopher is jogging through an emperor's gardens, trying to keep up with a madman.

It is the year 40 CE, on an estate outside Rome. The emperor is Gaius Caligula, who has recently decided that he is a god and cannot understand why one stubborn people in his empire refuses to agree. The old man is Philo of Alexandria — perhaps sixty-five, the most learned Jew alive, a man who has spent his life in quiet rooms showing that Moses and Plato are, at bottom, telling the same story. He has crossed the winter sea at the head of a small delegation of Alexandrian Jews to plead for his community, which has just survived one of the most vicious anti-Jewish riots in ancient history. Thousands of lives may hang on this conversation.

Caligula receives them while inspecting his villas. He strides from room to room ordering new windows and costlier decorations, and the ambassadors — elderly, dignified scholars — trot behind him like anxious tour guests, shouting fragments of their argument at his back. His opening question is not about the massacre. It is a sneer: "Why do you refuse to eat pork?" The courtiers burst out laughing. Philo later wrote that one look at Caligula's face told them they had come "not before a judge but before an accuser." The audience ends with the emperor's verdict on the whole Jewish people: they seem to him "not so much wicked as unfortunate and foolish" for refusing to believe in his divinity. Then he sweeps off to look at more windows.

Philo tells us the waiting and the terror of that year made old men of them — that they grew old in their anxiety. Here is philosophy dragged out of the study and thrown in front of raw power: the man who wrote serenely about the soul's ascent to God, reduced to chasing a tyrant through his renovation project.

And yet the joke of history is on Caligula. Within a year he was assassinated. Philo went home, finished his books, and died in his bed. And the ideas in those books — above all one Greek word, Logos — would quietly slip into a new religion being born in Judea, shape its most famous sentence, and run through Western thought for the next two thousand years.

The Life

To understand Philo you must first see his city, because Philo is his city with a mind attached.

Alexandria, founded by Alexander the Great on the Egyptian coast, was the New York of the ancient Mediterranean: the biggest port, the loudest streets, the place ambitious people went. It held the Great Library, which aimed to own a copy of every book in existence, and the Museum, a state-funded institute where scholars measured the Earth and mapped the stars. It also held the largest Jewish community outside Judea — by some ancient estimates hundreds of thousands strong, with their own quarter, courts, and grand synagogues. For three centuries, Greek learning and the Torah had lived side by side here. It was in Alexandria that Jewish scholars had translated their scriptures into Greek — the famous Septuagint — because most Alexandrian Jews no longer read Hebrew. Philo, who reveres Moses above all humans, almost certainly read him only in Greek translation his entire life.

Philo was born around 25 BCE into one of the richest Jewish families in the Roman Empire — a family that works almost too neatly as a parable of what happens when a minority meets a dazzling host culture. His brother Alexander held the office of alabarch, probably chief customs official for the Nile trade, and was wealthy on a scale that startled even Romans: he lent enormous sums to a future king of Judea and plated the great gates of the Jerusalem Temple with gold and silver. One of Alexander's sons, Philo's nephew Tiberius Julius Alexander, abandoned Judaism entirely, rose through the Roman army, became Roman procurator (governor) of Judea, and ended up — history's dark punchline — as a senior commander in the Roman force that destroyed the Jerusalem Temple in 70 CE. One family, three responses to empire: the brother gilds the Temple, the nephew helps burn it, and Philo, in between, spends his life arguing that you can be fully Greek in mind and fully Jewish in soul without betraying either.

He was educated in both worlds and hid neither. From the Greek side: the full gymnasium curriculum — Homer, geometry, music, rhetoric — and then philosophy, above all Plato, whom he adored (ancient readers joked, "either Plato philonizes or Philo platonizes"), plus a heavy dose of the Stoics. From the Jewish side: the Septuagint, read and preached every Sabbath in synagogues he proudly called schools of virtue. He was no cloistered scholar. He mentions evenings at the theater where the audience wept at Euripides, and an afternoon at a boxing match, watched closely enough to admire one fighter's strategy. He made the pilgrimage to Jerusalem — once, he tells us — to pray and sacrifice at the Temple his brother had gilded. Mostly, though, he wrote: dozens of treatises, most of them line-by-line philosophical commentaries on Genesis and Exodus, composed in a state he experienced as divine possession — ideas "falling like snow," his mind so filled he lost awareness of the room.

That contemplative life was smashed in the year 38 CE. Tensions between Alexandria's Greek and Jewish populations — over citizenship, status, and old resentments — ignited under a Roman prefect named Flaccus, who needed local Greek support to survive politically and paid for it with Jewish blood. What followed is often called the first well-documented pogrom — an organized urban massacre of a minority — in recorded history, and we know it in detail because Philo wrote it down as an eyewitness. Synagogues were desecrated or destroyed, with statues of the emperor forced inside to make them unusable. Jews were driven from most of the city and herded into a fraction of one quarter — arguably the first ghetto — where they starved. Mobs burned families alive. Elders of the Jewish council were flogged in the theater as public entertainment, with the whips reserved for the lowest criminals.

So the community turned to its most famous mind. Philo — by his own description an aging man being dragged back into "the ocean of political cares" — led the delegation to the emperor Gaius Caligula in 39–40 CE. We have seen how that went. It went worse than the ambassadors knew at the time: mid-mission, news arrived that Caligula had ordered a colossal statue of himself installed in the Temple in Jerusalem itself — a step that would have meant war. Philo's account of the whole affair, the Embassy to Gaius, together with his companion piece Against Flaccus, are among the most remarkable documents antiquity left us: philosophy's first extended eyewitness report on state persecution. Both books end the same way, and the ending is the point. Flaccus was arrested by Rome, exiled, and executed. Caligula was cut down by his own guards in January 41. For Philo this was not luck; it was providence — his lifelong conviction that a just God governs history — confirmed in the only courtroom that mattered.

He died around 50 CE, back in Alexandria, apparently in peace. He never knew that in Judea, during his own lifetime, a movement had begun that would carry his ideas further than his books ever could.

The Big Ideas

Philo's project sounds impossible when you say it plainly: prove that the Hebrew Bible, a collection of tribal stories, laws, and poetry, is the deepest philosophy the Greeks ever sought — that Moses got there first, and Plato was catching up. To pull this off he needed two tools. One was a way of reading. The other was a way of connecting an infinitely distant God to this messy world. Both changed history.

Allegorical reading: scripture has a body and a soul. Philo's founding move is a method. A sacred text, he says, is like a person: it has a body — the literal meaning, the surface story — and a soul — a hidden, deeper meaning about the inner life, which careful readers can uncover. This deeper reading is called allegory (from the Greek for "saying something other"): treating characters and events as symbols of universal truths. So when Genesis says Abraham left his homeland of Chaldea for a land God would show him, Philo reads the journey as a map of everyone's spiritual life: Chaldea, famous for astrology, stands for the mind trapped in materialism; Abraham's migration is the soul's journey away from obsession with the physical world, through self-knowledge, toward knowledge of God. When Genesis describes four rivers flowing out of Eden, Philo tells us they are the four cardinal virtues — prudence, courage, self-mastery, and justice — flowing from the garden of the soul. Notice what he's done there: those four virtues are the standard Stoic-Greek list (we met them in chapter 31). Philo has found the Stoics inside Genesis.

It is easy to smirk at this — isn't he just making the text say whatever he wants? Be careful. Philo usually keeps the literal meaning too (he insists, against radical allegorizers in his own community, that you must still actually keep the Sabbath, not just contemplate what it symbolizes). And his method rests on a serious claim: a text worthy of God cannot mean only its surface. If scripture says God "planted a garden" or "changed his mind," and God is not a gardener with regrets, the text is deliberately signaling that you must dig. Allegory, for Philo, is not evasion; it is respect. Still, flag what the method costs. Once a text can mean something other than what it says, who decides what it means? Philo's answer — trained, pious, philosophical readers — quietly relocates authority from the text to its interpreters. That problem has never gone away; it is alive in every argument about how to read a constitution, let alone a scripture.

The Logos: God's bridge to the world. Now the metaphysics — and Philo's most consequential idea. Start with his God, who is more radically transcendent than anything in Greek philosophy so far: utterly beyond the world, beyond qualities, beyond language. Philo says we can know that God is, but never what God is. Even the name God gives Moses at the burning bush — "I AM THAT I AM" in Philo's Greek Bible — he reads as a polite refusal: pure existence, no description attached. With that single move Philo founds what later theologians call negative theology (or apophatic theology, from the Greek for "denial"): the discipline of speaking about God chiefly by saying what God is not — not bounded, not changeable, not comprehensible. Keep your eye on that thread; it will run through this book for a thousand years.

But a God that far beyond everything has a problem: how does He touch anything? How does the unlimited create, order, and care for a limited world without being dragged into its mess? Philo's answer is the Logos. The Greek word means word, speech, and reason all at once, and Philo pours into it every tradition he owns. From Heraclitus (chapter 10) comes the Logos as the hidden rational order of the cosmos. From the Stoics (chapters 31 and 34) comes the Logos as the divine reason permeating all things like fire through iron. From Plato (chapter 22) come two crucial pieces: the demiurge, the craftsman-god who shapes the world, and the eternal Forms, the perfect blueprints of everything. And here Philo makes an invention with a millennium-long future: Plato's Forms, he says, are not free-floating eternal objects — they are God's thoughts, the design conceived in the divine mind the way a city first exists in the mind of its architect. The Logos is that total design, God's own Reason, projected outward as the instrument through which the world was made and is governed.

Philo reaches for metaphor after metaphor to say what the Logos is: God's "first-born son"; the "image of God" in which humans were made (your rational mind is a copy of a copy of God); the high priest of the cosmos; even — in one careful, qualified passage — a "second God," meaning not a rival deity but the face of the one God turned toward creation. The Logos stands "on the border," as he puts it, between Creator and creation, belonging fully to neither side — an ambassador, we might say, from a philosopher who knew exactly what ambassadors suffer. Within the Logos, Philo distinguishes two great "powers": the creative power (God as maker, linked to the Greek theos, "God") and the royal power (God as ruler and judge, linked to kyrios, "Lord") — an early attempt to explain scripture's different divine names, and a hint of how one God can wear several faces. One honest flag: Philo never quite settles whether God created the world out of absolutely nothing or shaped pre-existing formless matter, as Plato's craftsman did. His texts pull both ways, and scholars still argue.

Now the world-historical irony — the spine of this chapter. Within a generation of Philo's death, a Greek-speaking follower of Jesus wrote the opening of what became the Gospel of John: "In the beginning was the Logos, and the Logos was with God, and the Logos was God… and the Logos became flesh." Whether John's author had read Philo is debated, and probably undiscoverable; the ideas were in the Alexandrian air. But the conceptual channel is real: Christianity's boldest claim — that God's eternal Word became a human being — was thought, argued, and defended in Philo's vocabulary. The Christian theologians of the next centuries knew it, studied him intensely, and lovingly copied his manuscripts; that is the only reason his works survive. Meanwhile his own tradition let him go. Rabbinic Judaism, rebuilt in Hebrew and Aramaic after the Temple's destruction, took the other road — law, commentary, community — and had no use for a Greek philosophical Judaism that now looked uncomfortably like the church's property. Philo is never once mentioned in the Talmud. He effectively vanishes from Jewish memory until the Renaissance, when the Italian Jewish scholar Azariah de' Rossi reintroduced him — with fascination and suspicion — in 1573. Sit with the double irony: the most learned Jew of his age was preserved by Christians because he sounded Christian, and forgotten by Jews for the same reason.

Ecstasy, and a community of contemplatives. Philo is not only an intellectual; he is one of the West's first mystical writers. The peak of the soul's journey, he says, is a state where your ordinary mind stands aside so that God can act in it — he calls it, in a phrase that shouldn't work but does, sober intoxication: utterly clear, utterly overwhelmed. (He knows this state, he says, from his own writing desk.) And in a little book called On the Contemplative Life he describes a community called the Therapeutae — "healers" of souls — living simply by a lake outside Alexandria, men and women both, spending their days in prayer, allegorical study, and song. Whether he is reporting, idealizing, or partly inventing them, we can't fully tell — another honest flag — but the portrait itself matters: philosophy as a shared, disciplined, God-directed life, a template that looks startlingly like the monasteries that were still centuries away.

Ethics: the Torah as the law of nature. Finally, Philo fuses Greek and Jewish ethics with one elegant claim. The Stoics and Cicero (chapter 39) taught that there is a natural law — a moral order built into the universe, knowable by reason. Philo answers: yes, and the Torah is that law, written down. The law of Moses isn't one tribe's rulebook; it is the universe's own moral grammar, which is why Genesis begins not with commandments but with the creation of the cosmos. And the patriarchs — Abraham, Isaac, Jacob — who lived rightly before Sinai, before any law was given? They are what Philo calls living laws: people whose characters embodied reason so completely that the written law is essentially their biography, generalized. Greek virtue ethics and biblical obedience, welded into one.

Before & After

Backward, Philo's toolkit is the whole Greek story this book has been telling. From Plato (chapter 22) he takes the two-level universe — eternal intelligible truth above, shifting material copies below — and the soul's longing to climb. From the Stoics (chapters 31 and 34) he takes the Logos, the natural law, the four virtues, and the ideal of the sage's calm (tested, in his case, by an actual emperor). The indispensable precondition was the Septuagint: because the Torah already spoke Greek, it could be read as philosophy. And Philo wasn't the absolute first to try — a shadowy Alexandrian predecessor named Aristobulus and the biblical Wisdom books had already flirted with the synthesis — but he was the first to build it out, book by book, into a system.

Backward in another sense, too: this chapter is our book's first sustained meeting with the Hebrew Bible. Notice the boundary we've kept since chapter 1: Moses does not get a chapter, any more than the authors of the Vedas did — religious founders stand outside this roster. Philo enters not as a prophet but as a philosopher: a man giving reasoned arguments, in dialogue with Plato and the Stoics, for a picture of God, the world, and the good life. He is what happens when revelation decides to argue its case.

Forward, the lines fan out astonishingly. His younger contemporary Seneca (chapter 42, next) was serving Rome's Stoic conscience at the very court whose mad emperor Philo confronted — philosophy inside the palace and philosophy pleading at its gates, in the same decade. The Gospel of John's Logos we have seen. In Philo's own Alexandria, a century and a half later, Clement and Origen (chapter 50) built Christian Platonism directly on his foundations — Origen using Philo's allegorical method on the Bible almost page by page. Plotinus (chapter 51), also Alexandria-trained, would push Philo's unknowable God further into the pure "One" beyond being. Philo's negative theology flows on to Pseudo-Dionysius (chapter 64) and, in the great Jewish re-encounter, to Maimonides (chapter 90), who — without ever naming his forgotten Alexandrian ancestor — rebuilt the same bridge between Torah and Greek reason. And beyond any single name, Philo invented a pattern: the believer who translates faith into the best philosophy of the day. The Christian scholastics had their Philo moment; the Islamic philosophers (chapters 70 onward) had theirs; every modern believer weighing Genesis against geology is having one now.

Why It Still Matters

Start with the sound of it. This Sunday, in churches on every continent, someone will read "In the beginning was the Word." Hundreds of millions of people carry a piece of Philo's vocabulary in their heads without knowing his name. If you want a case study in how ideas outlive, escape, and betray their makers — how a thought can matter most where it was never sent — there is none better.

His reading method is even closer to home. Every time someone argues that a text must be read "in its historical context," or that a founding document has a living spirit beyond its literal words — in a courtroom over a constitution, in a seminar over a novel, in a sermon over a scripture — they are standing in the argument Philo started: does a text mean its surface, its depths, or both, and who gets to say? The stakes are not academic. Communities split, laws turn, and wars have started over exactly this question.

Then there is the embassy. Philo is the first philosopher we can watch, in his own words, representing a persecuted minority before hostile state power — enduring the mockery ("Why no pork?" is the ancient ancestor of every sneer at a minority's customs), the humiliation of pleading with someone who isn't listening, the discipline of staying rational when rage would feel better. Anyone who has advocated for their community before an indifferent institution knows this room. Against Flaccus and the Embassy read less like antiquity than like testimony from the twentieth century — which is one reason historians of the Holocaust have returned to them.

And beneath everything, Philo poses the standing question for every believer and every secular translator of belief: when you restate your faith in the language of the surrounding culture's best thought — Torah in Platonism, Christianity in science-speak, meditation in neuroscience — do you save it or dilute it? Call it heroic synthesis or double distortion; the honest answer may be "both, always." Philo made the bet that truth is one, so the bridge must be buildable. His nephew's career shows what total assimilation looks like; the Talmud's silence shows what total separation looks like. Philo lived and died on the hyphen — and the hyphen is where most of us, negotiating multiple identities in a plural world, actually live.

Over to You

Philo says we can know that God is but never what God is. Is a God about whom nothing can be said still worth worshipping — or has Philo protected God right out of relevance?

If a text can have a "soul" beyond its literal "body," what stops a reader from finding whatever they came looking for? Is there a principled line between deep interpretation and wishful thinking — in scripture, in law, in song lyrics?

Christianity preserved Philo; his own tradition forgot him. When your ideas are embraced mainly by people you never wrote for, do the ideas still belong to you? Who owns a thought once it leaves home?

Every tradition eventually faces its "Philo moment" — restate yourself in the reigning language of the age, or refuse and stay apart. Which choice takes more courage?

Where to Go Next

Start with the source: Philo, On the Embassy to Gaius — the eyewitness account of the pogrom's aftermath and the audience with Caligula; the most gripping thing he wrote, and free online in C. D. Yonge's translation. (For the philosophy, sample On the Creation.)

A modern way in: Maren Niehoff, Philo of Alexandria: An Intellectual Biography — a readable, prize-winning portrait arguing that the embassy to Rome transformed his thought.

The thread forward: Next comes Seneca — while Philo was pleading with a mad emperor from outside the palace, Rome's Stoic conscience was about to try taming one from within.