I am looking for the source of this quotation attributed to W. Jackson Bate, American literary critic and author, in an essay about Keats' poem:

"In time Cupid himself, healed of his wound, escapes… and joins Psyche… and Love may thus be said to have rescued the mind."
W. Jackson Bate

I wonder if anyone can help me and point to the original source of this quotation.

Many thanks.