How about imagination as catalyst for expanding the thoughts that are the natural byproduct of one's intelligence? If one has imagination, one can extrapolate from a present thought, via metaphor, to new connections, new ideas, new syntheses.
Well, J.L. To which coin do you refer? Is it the variation or the expert-expire; the IQ or the imagination; Hey, buddy, I could even get the Janus of mythology in here with her two faces.<smile>
Actually, I'm certain that you referred to the Dylans. My sister's advisor pubbed with the Thomas one. Jimmy Carter tried his best to get him buried in Westminster Abbey. No luck.