ΕΓΚΕΦΑΛΟΣ

Definition

According to the Liddell-Scott-Jones Lexicon, ἐγκέφαλος primarily refers to "the brain, the substance contained within the skull." The word is a compound, derived from the preposition "ἐν" (in, within) and the noun "κεφαλή" (head), thus directly indicating the organ's anatomical position. Its earliest attestations in ancient Greek literature, particularly within the medical tradition, establish it as a pivotal term for understanding anatomy and physiology.

The ἐγκέφαλος was recognized by the ancient Greeks as the principal organ of thought and sensation, a view that contrasted with other theories locating consciousness in the heart or diaphragm. Hippocrates, in his seminal work "On the Sacred Disease," unequivocally argued that the brain is the source of all intellectual functions, emotions, and mental afflictions. This perspective laid a crucial foundation for the subsequent development of medicine and philosophy.

In philosophy, Plato, in his "Timaeus," describes the brain as the seat of the rational part of the soul, placing it within the head, the most "divine" region of the body. Aristotle, while acknowledging its presence, primarily assigned it the role of cooling the blood, considering the heart to be the center of cognition. Nevertheless, the prevailing medical tradition, culminating with Galen, firmly established the brain as the absolute center of the nervous system and intellectual activity.

The term has maintained its core meaning consistently through the ages, both in scientific nomenclature and everyday language. The intricate complexity of the brain's functions, ranging from processing sensory data to generating consciousness and personality, ensures its status as a subject of perpetual research and profound admiration.

Main Meanings

1. The contents of the skull, the brain — The literal and primary meaning, referring to the organ situated within the head.
2. The center of cognition and sensation — The functional meaning, as developed in medical and philosophical thought, particularly by Hippocrates and Plato.
3. The soul, spirit, intellect — A metaphorical usage to denote intellectual capacity or the soul itself, as the seat of thought.
4. Reason, prudence — Refers to the faculty of sound judgment and thought, as a product of cerebral function.
5. The mind (as an organ of thought) — Common usage implying the capacity for thinking and understanding.
6. The central nervous system — A modern, broader medical concept encompassing the brain and spinal cord.

Word Family

kephal- (root of the head)

The root "kephal-" forms the basis for an extensive family of words in Ancient Greek, all related to the concept of the "head" or the "principal, upper part." Originating from the oldest stratum of the Greek language, this root expresses both the anatomical sense and metaphorical meanings such as beginning, end, sum total, or the most important point. The addition of prefixes and suffixes allows for the development of a rich vocabulary spanning various fields, from medicine and architecture to philosophy and daily life.

In Ancient Texts

The understanding of the brain as the center of cognition represents one of the most significant achievements of ancient Greek medicine and philosophy. Below are three characteristic passages:

The 18 Methods

Applying the 18 traditional lexarithmic methods to the word ΕΓΚΕΦΑΛΟΣ:

Sources & Bibliography

• Liddell, H. G., Scott, R., Jones, H. S. — A Greek-English Lexicon, with a Revised Supplement. Oxford: Clarendon Press, 1996.
• Hippocrates — On the Sacred Disease. Loeb Classical Library.
• Plato — Timaeus. Loeb Classical Library.
• Aristotle — Parts of Animals. Loeb Classical Library.
• Galen — On the Doctrines of Hippocrates and Plato. Edited and translated by P. De Lacy. Berlin: Akademie Verlag, 1978-1984.
• Long, A. A. — From Epicurus to Epictetus: Studies in Hellenistic and Roman Philosophy. Oxford University Press, 2006.