Part of the reason why students of Church history feel estranged from the material they are studying is the fact that they do not understand the world into which Christianity was birthed and grew up. That world was (primarily) the Roman Empire.1

Christianity engaged with its culture —called Greco-Roman due to its fusion of Greek (eastern) and Roman (western) cultures—, resulting in a mutual influence between the two.

The purpose of this essay is to show ten ways in which Greco-Roman philosophy, religion, and worldview influenced Christian theology. My hope is that this will help students understand Church history better, especially that of the first 1,500 years.

1. Hermeneutics

By the time Christianity had appeared in the ancient world, Greeks had been interpreting ancient texts —especially Homer’s Iliad and Odyssey— for centuries, and had developed three basic ways to interpret texts that were difficult to understand:

1) Many common people took a literal (or literalist) approach. For example, if Homer spoke of gods fighting each other during the Trojan War, they believed that this was meant to be understood literally, i.e., that there were gods, and that they fought with other during the Trojan War.

2) Liberal philosophers tended to go to the opposite extreme of the common people and rejected the sacred texts altogether. They saw them as ridiculous and unworthy of the gods, and thus refused to acknowledge their authority. After all, why would they care so much about human affairs that they were willing to fight with each other? Thus, they rejected the idea of gods altogether and sought natural explanations for everything. This is the background (at least in part) of the natural philosophers, beginning with Thales of Miletus in the 6th cent. BC and continuing until today.

3) Conservative philosophers tended to look to allegory as a way to explain these difficult texts. For example, they would argue that texts which speak of gods who were fighting with each other were really talking about man’s internal conflict (i.e., psychology) or the “battle” between the four elements of fire, air, water, and earth. These three hermeneutical options (especially the first and third) will be the primary ones available to Christians as they seek to interpret the Old Testament.

2. Quarrel between poets and philosophers

Near the end of his masterpiece The Republic, Plato makes reference to “an old quarrel between philosophy and poetry” (Book X, 607b). In essence, Plato is referring to the quarrel between reason (philosophy) and revelation (poetry), and which one is more authoritative: should reason submit to revelation, or should revelation submit to reason?

This “quarrel” will manifest itself at a few key moments throughout Christian history, such as in the case of Peter Abelard in the 12th century, and the French Enlightenment in the 18th century.

If the theme of the poets is fides quaerens intellectum (“faith seeking understanding”), then the theme of the philosophers is intellectus quaerens fidem (“understanding seeking faith”).

3. Platonic deduction vs. Aristotelian induction

This is similar (and possibly related) to the previous point, but it is sufficiently important to merit its own treatment.

Basically, there are two basic approaches to epistemology (i.e., ways of knowing): deduction, which begins with the big picture and works its way down to interpret the little facts in light of it, and induction, which begins with the little facts down below and works its way up to try and form the big picture.

Plato took a basic deductionist approach to knowledge, and Aristotle a basic inductionist one. This clash of epistemological views occurs again and again throughout Church history.

A particularly acute example happened in the Middle Ages with the clash between nominalists (inductionists) and realists (deductionists).

4. Tripartite division of the soul

Stretching back to their earliest traditions,2 and taking its canonical shape in the works of Plato and Aristotle, the Greeks understand the soul to be divided into three parts: reason, spirit (i.e., impulse), and appetites.

With this basis, they extrapolated that classes and societies should be structured according to the same divisions. Regarding classes, some people were wise, and thus should rule; some were brave, and thus should fight; and some were appetitive, and thus should be the producers (“working class”).

Regarding societies, the Greeks envisioned three basic types3: monarchies, ruled by one wise person who desired truth; aristarches, ruled by some brave people who desired honor; and polities, ruled by many common people who desired freedom and equality.

This entire scheme of thinking about psychology, classes, and society will become the basis for Christian reflection.

5. Four philosophical virtues

This could have been included in the previous point, but it is of such importance and influence that it deserves a separate treatment.

According to the Greeks (again, esp. Plato and Aristotle), each part of the soul had its corresponding virtue: the rational part’s virtue was wisdom, the spirited part’s virtue was bravery, and the appetitive part’s virtue was moderation.

When all of these virtues are working together in harmony, this produces justice, which is the fourth virtue. These virtues will be taken into the Christian tradition and form four of the seven Christian virtues, which are the backbone of Christian ethical instruction and reflection: the four philosophical virtues, plus the three Christian virtues of faith, hope, and love.

6. Aristotle’s ethical theory

In his justly famous work entitled Nicomachean Ethics, Aristotle advanced the general theory that if someone wants to be something, they must practice it until they become it.

For example, if someone wants to be a baker, they must practice the habits of a baker until they finally become one. He applied this same principle to ethics, and specifically to the issue of justice: if someone wants to be a just person, they must practice justice until they become one.

This is known as “ethics through habituation” and became the standard position of Christian thinkers in the Middle Ages.

However, when Martin Luther tried to become a just person by practicing justice, what he found was that he only became more aware of how unjust he was, especially in light of God’s holy standards.

This was the background of the Protestant Reformation and continues to be a point of contention between Catholic and Protestant thinkers.

7. Aristotle’s chain of being

Although Aristotle was not the first Greek thinker to discuss a chain of being, he is its most famous proponent. Aristotle placed all of reality on a chain (or ladder) of being based on their respective abilities.

For example, at the bottom would be rocks and minerals, which are irrational, immoveable, and static. Above them would be plants, which are irrational, immoveable, but dynamic organisms.

Above them would be animals, which are irrational, but moveable and dynamic. Above them would be humans, who are rational, moveable, and dynamic. Finally, above humans is the gods, who are immortal and perfect.

Christians took this chain of being from Aristotle and applied it to many areas of life, such as the State and the Church.

8. Freewill vs. determinism

Before Christianity arose, Greeks (and other societies, for that matter) were already well-versed in the debate between freewill and determinism. Regarding determinism, there were at least two ways of understanding it: some people thought that the gods controlled our fates, and others that the stars did so.

Whatever the source, the point is that their debates would later influence Christian arguments over the relationship between divine sovereignty and human responsibility.

9. Trivium and quadrivium

By the time Christianity came on the scene, Greco-Roman education was divided into the trivium and quadrivium. The trivium consisted of grammar, dialectic, and rhetoric, and the quadrivium of geometry, arithmetic, music, and astronomy.

This will be groundwork for primary and secondary education during the Middle Ages and beyond.

10. Priority of the spiritual over the physical

Although the Greeks knew that they had bodies, they did not think much of them. In fact, they saw them as cages in which their spirits had been locked up and had invented a catchy rhyme to capture this thought: soma sema (“body tomb”).

This becomes the background to many heresies and false teachings throughout Church history. For example, in the early Church, Gnosticism basically despised the physical world in preference for the spiritual one.

A more controversial example would be the posture of many modern Protestants, who really don’t have much of a theology of the body, sacraments, or physical world in general.

While there is much more that could be said regarding prolegomena to reading Church history in general, and regarding the influence of Greco-Roman religion, philosophy, and worldview in particular, students who understand these ten basic ideas will have a much easier time when reading Church history.

Andrew Messmer is the academic dean and professor at the Sevilla Theology Seminary.

Notes