Evidence abounds that large inequalities undermine community life, reduces trust among citizens, and increases violence. In one major study from data collected over 30 years [by the epidemiologists Richard Wilkinson and Kate Pickett in their book: The Spirit Level: Why Greater Equality Makes Societies Stronger] the most consistent predictor of mental illness, infant mortality, educational achievements, teenage births, homicides, and incarceration, is economic inequality. And as Nobel Laureate Kenneth Arrow has written, “Vast inequalities of income weakens a society’s sense of mutual concern…The sense that we are all members of the social order is vital to the meaning of civilization.”
