George Lakoff is professor of linguistics at the University of California at Berkeley, and the coauthor, with Mark Johnson, of Metaphors We Live By. He was one of the founders of the generative semantics movements in linguistics in the 1960s, a founder of the field of cognitive linguistics in the 1970s, and one of the developers of the neural theory of language in the 1980s and '90s. His other books include More Than Cool Reason (with Mark Turner), Women, Fire, and Dangerous Things, and Moral Politics.

Rafael Nuñez is currently at the Department of Psychology of the University of Freiburg, and is a research associate of the University of California, Berkeley. He is the co-editor of Reclaiming Cognition: The Primacy of Action, Intention and Emotion.