Born to a Greek family in Samaria at the end of the first century AD, Justin was a spiritual seeker who studied the Stoics, Aristotelians, Pythagoreans, and Platonists, before converting to Christianity. Although he nominally rejected his philosophical training while embracing his new faith, he could not help but employ the lenses and tools of a philosopher as he worked to understand Christianity and explain it to his contemporaries. Justin’s works, including a “First Apology” and “Second Apology” (that is, arguments on behalf of the Christian faith) are the foundation of Christian apologetics. Justin sees the Christian gospel and theology as broadly compatible with ideas found in Greek philosophy, and is the first Christian to argue that philosophers including Socrates and Plato were effectively Christians without knowing it. John Hamer of Toronto Centre Place will review the life and works of Justin Martyr, and consider their influence on later Christian theology and Christian attitudes toward the inheritance of Greek philosophy.