I found the quote below by F.M Alexander by searching for "Feldenkrais" on Pinterest. Well, it certainly could have been said by Feldenkrais as well. They were certainly on to similar ideas...
And Moshe Feldenkrais in a similar vein:
"There is little doubt in my mind that the motor function, and perhaps the muscles themselves, are part and parcel of our higher functions. This is not true only of those higher functions like singing, painting and loving, which are impossible without muscular activity, but also of thinking, recalling, remembering and feeling." - From the article "Mind And Body, Moshe Feldenkrais, 1980.
Cheers to both men!
By the way...the highest ranked page on Google of Moshe Feldenkrais quotes can be found on the blog that I created many years ago while a grad student. I first published the post in 2007: Some Feldenkrais Quotes.