How did C. S. Lewis know exactly how to say EVERYTHING?

"For they (art and music) are not the thing itself; they are only the scent of a flower we have not found, the echo of a tune we have not heard, news from a country we have never yet visited."

~ C.S. Lewis

 

I have nothing to add to this:

A. It speaks for itself.

B. I'm not sure I can completely wrap my mind around it.