From “The Origin of Consciousness in the Breakdown of the Bicameral Mind”:

“Understanding a thing is to arrive at a metaphor for that thing by substituting something more familiar to us. And the feeling of familiarity is the feeling of understanding.”

“Understanding in science is the feeling of similarity between complicated data and a familiar model.”

“The Bohr model of the atom is that of a proton surrounded by orbiting electrons. It is something like the pattern of the solar system, and that is indeed one of its metaphoric sources.”