Peace. It does not mean to be in a place where there is no noise, trouble or hard work. It means to be in the midst of those things and still be calm in your heart.
Unforunately, I have no idea who wrote this, but I love it and had to share it! (If you know who the author is please write me so I can give credit where it's due.) I saw it on a wall canvas at this site Acacia.