Alone among all the holidays, on Sukkot we are commanded not only to celebrate but also to have “only joy” (Deut. 16:15).  How is it possible for us to have only joy in our hearts, when we know that along with all of the wonderful things in our lives there is also the brokenness and pain of living in a world that is so far from perfect?  The ancient rabbis taught that only the angels are capable of having one thought or one feeling that completely occupies their being;