So blind not to see the mercy in the snow

Esser tanto cieco da non vedere la Misericordia nella neve: a way of saying “Do you need your eyes testing?” this expression dates back to ancient Tuscany, where the Brothers (and Sisters) of Mercy took care of the needy. They wore black capes – a sign of humility – which were highly visible in the snow. If you didn’t see them, you must have been blind, hence the expression. Of course, these were the days before fluorescent colors, because surely bright yellow or orange would be even more visible.