μεταφορά

Metaphor comes from Greek μεταφορά (metaphorá), meaning 'a transfer, a carrying across,' from μεταφέρειν (metaphérein, 'to carry over, to transfer'), a compound of μετά (metá, 'across, over, beyond, after') and φέρειν (phérein, 'to carry, to bear'). The literal meaning is entirely physical: a metaphorá was a transfer, a transportation, a carrying of something from one place to another. The word was used in Greek for the literal movement of goods and in Greek grammar for the figurative use of a word in a context beyond its literal application — transferring a word from the domain where it belongs to a domain where it only figuratively applies. When Aristotle writes that 'the evening of life' metaphorically transfers 'evening' from time of day to stage of life, he is naming the transport of a word across semantic territory.

Aristotle's treatment of metaphor in the Poetics and the Rhetoric is the foundational analysis of figurative language in Western thought. In the Poetics, he defines metaphor as 'the application of an alien name by transference either from genus to species, or from species to genus, or from species to species, or by analogy.' For Aristotle, the ability to make good metaphors was a sign of genius and could not be taught — it required the intuitive perception of similarity between dissimilar things. The metaphor was not decoration but cognition: it revealed a relationship between domains that literal language could not express. To see evening and old age as analogous required seeing something true about both that was not available to a mind that only processed the literal.

The study of metaphor lay relatively dormant between Aristotle and the twentieth century, treated as a figure of speech — a rhetorical ornament rather than a cognitive operation. The Romantic period rehabilitated metaphor as the essential activity of the poetic imagination, but it was George Lakoff and Mark Johnson's Conceptual Metaphor Theory (1980) that fundamentally changed the understanding of the term. In Metaphors We Live By, Lakoff and Johnson argued that human conceptual systems are largely structured by metaphors that are invisible because they are so pervasive: ARGUMENT IS WAR (we attack positions, defend claims, shoot down ideas), TIME IS MONEY (we spend time, waste time, invest time), MORE IS UP (prices rise, spirits soar, production falls). These are not decorative metaphors but the underlying structures through which we think.

The implications of Conceptual Metaphor Theory were radical: if thought is structured by metaphor, then changing the metaphor changes the thought. The way a political debate is framed — whether crime is a 'beast to be caged' or a 'disease to be treated' — determines the range of solutions that seem natural. The metaphors embedded in economic language — 'the economy grows,' 'markets are healthy or sick,' 'bubbles burst' — are not neutral descriptions but conceptual frames that constrain imagination. The word that Aristotle used for the carrying of a name from one domain to another has turned out to name the carrying of entire cognitive structures from one domain to another. The Greeks built a word for a rhetorical figure; the twentieth century discovered it was the architecture of thought itself.