“If thou go on the left hand, thou shalt in this way be soon essayed.”Words on the Cross to Sir Galahad, The Holy Grail, by Thomas Malory, Chapter XIIWords on the Cross to Sir Galahad,The Holy Grail, by Thomas Malory, Chapter XIIThough left and right are fundamental terms of our social and political vocabulary, perhaps indeed the ultimate dividing concepts of ways of life on the earth today, their meaning seems to be as obscure as their application is ubiquitous.