Johnson, Mark and George Lakoff. Philosophy in the Flesh. Basic Books, Jackson, TN, 1999.

“These findings of cognitive science are profoundly disquieting in two respects. First, they tell us that human reason is a form of animal reason, a reason inextricably tied to our boudies and the peculiarities of our brains. Second, these results tell us that our bodies, brains, and interactions with our environment provide the mostly unconscious basis for our everyday metaphysics, that is, our sense of what is real.” (p. 17)