ΟΥΣΙΑ
Ousia (οὐσία, ἡ) stands as a cornerstone of ancient Greek philosophy, denoting the 'being' of things, their immutable nature, and their substance. From the Presocratics to Aristotle and the Church Fathers, the concept of ousia is central to understanding reality and existence. Its lexarithmos (681) suggests a deep structure and fundamental truth.
Definition
According to the Liddell-Scott-Jones Lexicon, ousia primarily means 'being, existence' and by extension 'property, possessions.' However, its philosophical significance is far more profound and complex, establishing it as one of the foundational concepts of ancient thought.
In Platonic philosophy, ousia is identified with the eternal and immaterial Forms (Ideas), which constitute the true and unchanging reality, in contrast to the perishable and mutable sensible things. The Forms are the 'essence' of things, what something truly is.
Aristotle developed a more systematic approach, distinguishing between 'primary substance' (πρώτη οὐσία, e.g., 'this individual man') as the individual, concrete subject that cannot be predicated of anything else, and 'secondary substance' (δευτέρα οὐσία, e.g., 'man,' 'animal') as the species and genus to which the primary substance belongs. For Aristotle, ousia is the 'what it was to be' (τὸ τί ἦν εἶναι), meaning the defining nature or form of a thing.
In Stoic philosophy, ousia is identified with matter (ὕλη), viewed as the passive principle underlying all existence, acted upon by the active principle (λογος). In Neoplatonism, Plotinus places The One (τὸ Ἕν) 'beyond ousia' (ὑπερούσιος) as the super-essential first principle. Finally, in Christian theology, ousia is used to describe the common divine nature shared by the three Persons (hypostases) of the Holy Trinity (e.g., 'homoousios'), as well as the divine and human natures of Christ, distinct from 'hypostasis' which refers to the individual persons.
Etymology
Cognate words include the verb 'εἰμί' (to be), the noun 'ὄν' (being, existent), the adverb 'ὄντως' (really, truly), the verb 'ὑπάρχω' (to exist, to be present), and the noun 'ὑπόστασις' (substance, subsistence, hypostasis). These terms collectively form a semantic field centered on existence, reality, and underlying nature.
Main Meanings
- Being, existence, reality — The fundamental meaning, referring to the very existence of a thing or reality itself.
- Property, possessions, estate — A common, non-philosophical usage in classical Greek, denoting one's material wealth or holdings.
- Essence, nature, what a thing is — The defining nature of a thing, that which makes it what it is (e.g., Platonic Forms, Aristotelian form).
- Substance, individual entity, substratum — In Aristotelian philosophy, 'primary substance' as the concrete, individual thing that exists independently.
- Kind, species, genus — In Aristotelian philosophy, 'secondary substance' as the category (species or genus) to which a primary substance belongs.
- The essential part, the core — The central, necessary aspect or component of a thing, as opposed to its secondary characteristics.
- Truth, the true state of affairs — The actual condition of things, the truth hidden behind appearances.
Philosophical Journey
Ousia is one of the most fundamental concepts that shaped the course of Western philosophy and theology, evolving through the centuries:
In Ancient Texts
Three pivotal passages that highlight the philosophical significance of ousia:
Lexarithmic Analysis
The lexarithmos of the word ΟΥΣΙΑ is 681, from the sum of its letter values:
681 decomposes into 600 (hundreds) + 80 (tens) + 1 (units).
The 18 Methods
Applying the 18 traditional lexarithmic methods to the word ΟΥΣΙΑ:
| Method | Result | Meaning |
|---|---|---|
| Isopsephy | 681 | Base lexarithmos |
| Decade Numerology | 6 | 6+8+1=15 → 1+5=6 — The Hexad, a number of creation, order, and harmony, reflecting the fundamental structure of existence. |
| Letter Count | 5 | 5 letters — The Pentad, symbolizing life, humanity, and synthesis, suggesting the integral nature of essence. |
| Cumulative | 1/80/600 | Units 1 · Tens 80 · Hundreds 600 |
| Odd/Even | Odd | Masculine force |
| Left/Right Hand | Right | Divine (≥100) |
| Quotient | — | Comparative method |
| Notarikon | O-U-S-I-A | Ontological Unity Sustains Inherent Actuality. |
| Grammatical Groups | 3V · 2S · 0M | 3 vowels (o, u, i, a), 2 semivowels (s), 0 mutes. The predominance of vowels and semivowels lends the word a fluidity and continuity, symbolizing the unbroken flow of existence. |
| Palindromes | No | |
| Onomancy | — | Comparative |
| Sphere of Democritus | — | Divination with lunar day |
| Zodiacal Isopsephy | Venus ♀ / Capricorn ♑ | 681 mod 7 = 2 · 681 mod 12 = 9 |
Isopsephic Words (681)
Words from the Liddell-Scott-Jones lexicon sharing the same lexarithmos (681) as ousia, revealing hidden connections and enriching the understanding of the concept:
The LSJ lexicon contains a total of 90 words with lexarithmos 681. For the full catalog and AI semantic filtering, see the interactive tool.
Sources & Bibliography
- Liddell, H. G., Scott, R., Jones, H. S. — A Greek-English Lexicon (9th ed., with a revised supplement). Oxford: Clarendon Press, 1996.
- Plato — Republic. Translated by Paul Shorey. Loeb Classical Library, Harvard University Press, 1930.
- Aristotle — Categories. Translated by E. M. Edghill. In The Basic Works of Aristotle, edited by Richard McKeon. Random House, 1941.
- Plotinus — Enneads. Translated by Stephen MacKenna. Penguin Classics, 1991.
- Jaeger, Werner — Paideia: The Ideals of Greek Culture. Oxford University Press, 1939-1944.
- Lloyd, G. E. R. — Aristotle: The Growth and Structure of His Thought. Cambridge University Press, 1968.
- Armstrong, A. H. — An Introduction to Ancient Philosophy. Methuen, 1965.
- Gregory of Nyssa — On Not Three Gods. Translated by C. C. Richardson. In Nicene and Post-Nicene Fathers, Series II, Vol. 5. Hendrickson Publishers, 1994.