Equality does not imply the leveling of individual differences, nor that individuals should be made physically, morally, or mentally identical. Diversity in capacities and powers — those differences between races, nations, sexes, ages, and persons — far from being a social evil, constitutes, on the contrary, the abundance of humanity…. Equality and justice demand only a society so organized that every single human being will — from birth through adolescence and maturity — find therein equal means, first for maintenance and education, and later, for the exercise of all his natural capacities and aptitudes.