The ‘social mobility tsar’ Katharine Birbalsingh has suggested that children, born evil, ‘need to be taught right from wrong and then habituated into choosing good over evil’. The Twitter mob is equally certain that all children are born ‘good’, and it is their environment that spoils them. Ancient Greeks, ignorant of St Augustine, did not think that this was a simple either/or question but that moral capacity was determined in many different ways, depending on e.g.