St. Justin Martyr (100 -166 A.D.), also known as Justin the Philosopher, was an early Christian philosopher and apologist (Defender of the Faith).  He was a Samaritan, born in Flavia Neapolis, Palestine, located near Jacob’s well (cf., John 4). From an early age, he studied Stoic and Platonic philosophers.  At the age of 32, he converted to Christianity in Asia Minor (modern-day Turkey), possibly in Ephesus. Around the age of 35, he became an iterant preacher, moving from city to city in the Roman Empire, in an effort to convert educated pagans to the faith. Eventually, he ended up in Rome and spent a considerable amount of time there, debating and defending the faith. Of all his writings, only three survive: First Apology, Second Apology, and Dialogue with Trypho. St. Justin Martyr was scourged and beheaded in Rome in AD 166, under the reign of Marcus Aurelius, along with six of his followers.

Unlike Tertullian (a 2^nd century Roman Carthaginian Christian author), who was opposed to Greek philosophy and viewed it as a dangerous pagan influence on Christianity, Justin Martyr viewed Greek philosophy in a more positive and optimistic light.  He believed that Christianity both corrected and perfected philosophy.

While Tertullian refused to build a bridge between faith and philosophy, Justin Martyr was, on the other hand, eager to build a bridge between the two – and the name of that bridge was Logos*.    

Logos, a central concept in ancient Greek philosophy, represents the divine reason or rational principle that governs the universe. The concept of Logos predates philosophical Stoicism. However, the Stoics, beginning with Zeno of Citium in the 3^rd century BC, developed it into a cornerstone of their philosophical system.  This Greek term, often translated as “word,” “reason,” or “plan,” is fundamental to understanding Stoic philosophical cosmology and ethics.  In Stoic thought, Logos is not just an abstract principle but an active, generative force that permeates all of reality. To the Stoics, Logos represented:
• Universal Reason: Logos as the rational structure of the cosmos
• Divine Providence: The idea that the universe is governed by a benevolent plan
• Natural Law: Logos as the source of moral and physical laws
• Human Rationality: The belief that human reason is a fragment of the universal Logos

After John the Gospel Writer declared Christ to be the Logos in the prologue to his Gospel (cf., John 1, “In the beginning was the Logos…”) in about AD 90, the idea of Christ as Logos reached full bloom in the second century A.D., thanks to Justin Martyr and other early like-minded Christian philosophers.

Justin embraced the term “Logos” because it was familiar to Christians and non-Christians alike. Justin, in discussing the Logos, uses the expression, ζωτικόν πνεύμα (zotikon pneuma), vital spirit, which imparted reason as well as life to the soul. Justin understood this ζωτικόν πνεύμα as the divine principle in man. For Justin, it is a participation in the very life of the Logos. Therefore, he calls it the σπερματικόσ λόγοσ (spermatikos logos), the ‘seed of the word’, or reason in man. 

This was a powerful tool in the hands of apologists like Justin. For by “Christianizing” Greek philosophy and literature, and deeming it a forerunner to Christ, the Christian apologists could easily counter the claims of the pagans who maintained that the Greeks beat the Christians to the punch. After all, the pagans said, the truths that the Christians were proclaiming as new were being taught by Greek philosophers years (read: centuries) before.

Justin maintained that the whole of Logos resided in Christ, but that all people, regardless of time or religion, contained these “seeds” of logos. Justin states,

“We have been taught that Christ is the first-born of God, and we have declared above that He is the Word [Logos] of whom every race of men were partakers; and those who lived reasonably are Christians, even though they have been thought atheists; as, among the Greeks, Socrates and Heraclitus, and men like them;” (First Apology, Chapt. 46)

Justin declared that even the pre-Christian philosophers who thought, spoke, and acted rightly did so because of the presence of the spermatikos logos in their hearts.  To Justin, there is only one Logos that sows the seeds of spiritual and moral illumination in the hearts of human beings. Justin applied the spermatikos logos to explain that Christ, as the Logos, was in the world before his Incarnation, from the beginning of time, sowing the seeds of the logos in the hearts of all people. In this way, Christ united faith and philosophy. To Justin, Christ is the ultimate source of all wisdom and knowledge, even among pagans. Justin writes:

“For each man spoke well in proportion to the share he had of the spermatic word [spermatikos logos], seeing what was related to it… Whatever things were rightly said among all men, are the property of us Christians… For all the writers were able to see realities darkly through the sowing of the implanted word that was in them.” (Second Apology, Chap. 13)

According to Justin, some virtuous pagans recognized the spermatikos logos within themselves and cultivated it to a large extent. These became the great thinkers such as Socrates, Plato, and Aristotle. Some, in the manner of Christ, like Socrates and Heraclitus, were even hated and persecuted for their beliefs and actions.  Justin tells us the following:

“And those of the Stoic school — since, so far as their moral teaching went, they were admirable, as were also the poets in some particulars, on account of the seed of reason [the Logos] implanted in every race of men — were, we know, hated, and put to death — Heraclitus for instance, and, among those of our own time…others.” (Second Apology, Chap. 8)

People who came before the Incarnation of Jesus Christ all had the spermaticos logos, the “seed” of the Logos, implanted in them. Those Christians who came after the incarnation and resurrection of Jesus Christ had full access to all of Christ, the complete Logos. Those who came before saw through a glass darkly, but those who embrace Jesus Christ in the Christian era experience the fullness of revelation—faith and philosophy synthesized via Christ as Logos.

The Logos reveals all of God because He is God and we Christians had all the fullness of Logos because we had the revelation of Jesus Christ. The pagans did not have that. They had the spermatikos logos, but not the resurrected Christ.

Justin’s Logos was Jesus Christ himself portrayed against the backdrop of the Old Testament “Word of God” and Greek philosophy.

Contemporary Christians can easily agree with Justin Martyr that all people have within them the seeds of the Logos, the spermatikos logos. It is another way of saying that we all are created in the image of God and have an inherent knowledge of him and desire for Him.  

Justin Martyr clearly represents an early, inclusive, universal Christianity encompassing all persons and religions; a time before the Church developed into an exclusive, parochial, competitive, religious institution.

Regardless of Tertullian’s fear that synthesizing faith with philosophy would “Hellenize” Christianity, Justin’s efforts ended up doing the precise opposite; faith ended up “Christianizing” Hellenism.

* “In Latin, such is the poverty of the language, there is no term at all equivalent to the Logos.” – John B. Heard. The same is true of English.