Anthropologist Margaret Mead once said that the first sign of civilization was the discovery of the skeleton of a person who had broken their femur, and healed it. An injury like that prevents a person from going out and getting food and water for themselves, and takes longer to heal than any person can go without sustenance. It requires the existence of a society, however small, with the resources and desire to care for those among them who are not able to fully care for themselves. That is, and always has been humanity’s greatest strength. It’s also one of the most essential parts of human nature.

Abe Drayton on nurture.