Since the emergence of agriculture and the appearance of the city, human proximity has been a central issue for culture. Most religious thought has privileged the idea of the neighbour as expressing the supreme religious value of Love Thy Neighbour, common in Christianity, Islam and Judaism. In philosophy it has emerged more in terms of the polis and then as the idea of a community. It has always been noticed that relations with neighbours have been particularly tense and have been the basis for outbreaks of hostility.