I have used the quote recently in a book I made for a collaborative exhibition in Japan. It was part of a sculptural piece that provided spaces for both Japanese and Australian artists to display their works.
I also used the quote in small 'book-ets' I made for an exhibition here. I called them "peace in your pocket". They were small pages, cut and folded so that you could always carry peace with you. The good news is that all of them sold, so a few folk now carry peace in their pockets..