Today the power of a few lines, drawn at speed, on a piece of paper, took on a new significance. Perhaps we should all draw cartoons and pictures to offer an image of a world at peace - flood Twitter, Facebook, newspapers and TV screens with the scribbles of children made with wax crayons, with the reluctant attempts of adults once told that they 'couldn't draw', the shaky hardly-holding-the-pencil attempts of the elderly - we could paper the mosques, churches, synagogues, banks, hospitals, schools, libraries... with our dreams of peace.