Conscious mind is a spatial analog of the world and mental acts are analogs of bodily acts. Consciousness operates only on objectively observable things. Or, to say it another way with echoes of John Locke, there is nothing in consciousness that is not an analog of something that was in behavior first.

Book I, Chapter 2, p. 66 - The Origin of Consciousness in the Breakdown of the Bicameral Mind (1976)