Moreover, metaphor is typically viewed as characteristic of language alone, a matter of words rather than thought or action. For this reason, most people think they can get along perfectly well without metaphor. We have found, on the contrary, that metaphor is pervasive in everyday life, not just in language but in thought and action. Our ordinary conceptual system, in terms of which we both think and act, is fundamentally metaphorical in nature.
George LakoffWe categorize as we do because we have the brains and bodies we have and because we interact in the world as we do.
George LakoffFor centuries, we in the West have thought of ourselves as rational animals whose mental capacities transcend our bodily nature. In this traditional view our minds are abstract, logical, unemotionally rational, consciously accessible, and, above all, able to directly fit and represent the world. Language has a special place in thie view of what a human is - it is a privileged, logical symbol system internal to our minds that transparently expresses abstract concepts that are defined in terms of the external world itself.
George LakoffLiberals have a set of folk theories that are fallacious. One of them comes from the Enlightenment, and the assumption is that you are supposed to be logical. They assume all you have to do is tell people the facts and they will reason to the right conclusion. This is utterly ridiculous. Thought is mainly metaphorical. The frames trump all the facts.
George Lakoff