Who said "Knowledge and spirit go hand in hand,but Knowledge takes two
steps back and tips his hat to spirit"

A variation of this quote is present on this page:

http://www.coastalantiques.com/ANTartfultouch.html

"Ultimately, spirit and knowledge go hand in hand, says Lewis. "But,"
she adds, "knowledge must step back and tip its hat to spirit. Spirit
is a less literal kind of atmosphere. It is the air, or mood, that
surrounds a work of art. Artists spend their entire lives trying to
communicate this spirit."

I don't know if this is where it originates from.