The inequality in a nation must have a huge effect on the nature of the people in that nation. That a treatise on inequality has won a Nobel prizes for economics would tend to support your thesis [1]. That another Nobel prize winner has also written on inequality should clinch it [2].

Fix inequality.

[1] https://www.nobelprize.org/prizes/economic-sciences/2015/dea... [2] https://en.wikipedia.org/wiki/Joseph_Stiglitz