Metaphor are devices for understanding

Metaphors are basically devices for understanding and have little to do with objective reality, if there is such a thing. The fact that our conceptual system is inherently metaphorical, the fact that we understand the world, think, and function in metaphorical terms, and the fact that metaphors can not merely be understood but can be meaningful and true as well—these facts all suggest that an adequate account of meaning and truth can only be based on understanding.

–George Lakoff Metaphors We Live By