Published on Saturday, 11 February 2012 12:03 | | 
Inequality matters! It causes stress, undermines community life and corrodes society as a whole.
Societies that do best for their citizens, claim Richard Wilkinson and Kate Pickett in their book The Spirit Level, are those with the narrowest income differentials, such as Japan and the Nordic countries. The most unequal - the United States, Portugal and the United Kingdom - do worst.