This book presents the I Ching as an example of a language, a language of the vague, and as such shows the ability of the I Ching to describe itself by reference to itself. This association with language allows for linking yang/yin with fight/flight - the language we call "emotions". Through consideration of current research into emotions, the book brings out the ability to translate the language of primary emotion into the language of yang/yin and so present a more consistent, precise, yang/yin interpretation of any situation given an emotional assessment of that situation. The appendix introduces a more general perspective on meaning derivation given our current knowledge about our neurology and the creation of symbols and metaphors.