Having defined exactly what and who we are as individuals, how do we live with other individuals?
Most, if not all, individuals interact with others because they each have something in common with the others.
In the family, it is this idea of blood being the common and members of a family are compelled to take care of each other. In traditional societies, the extended family is the welfare state and the challenge of each family against another family is to see whose family will last the greatest number of generations. (There are also those who are quite happy to annihilate theirs right within the current generation because to them life is suffering and not worth keeping.) That is why some families leave behind commercial and political empires on earth.
In society in general, there is a tendency to pursue a uniform way of life. Traditionally, these have been dictated by folk festivities which surrounded the agrarian economy, as there is a season and time for work and a time for play. Eventually, these get supplanted by religious commands which tries to replace communal or tribal authorities. The struggle for power between the political and religious continues until today. So long as religious power overwhelms political power, there is a tendency for one religion to try to dominate the rest. If political power is in control, the tendency is for one race to dominate the others.
There is also a battle between political power and economic power. Political is often derived through the exploitation of economic power, as businessmen back politicians. Economic power can be pursued with economic power, as businessmen gain political power and re-configure the economy according to his or her advantage.
Against this confusing array of conflicts in human societies, Plato suggested the Philosopher-King or the Benevolent Dictator - one authority who knows what to do in the interests of all individuals and for society as a whole. For this to be plausible, there must be a common elements in all that is otherwise very messy among human colours.
Of course, the common element in all societies of human beings are human beings - and their right to exist on this earth. It is this protection of human lives and the assistance given to the poor and incapacitated that has influenced our thinking on how to live together with each other and with others. We may be look different, eat different, talk different, but we should be able to recognise ourselves as fellow human beings.
It is only when human societies are not properly organised and when some unfortunate ones who are left out of the mainstream that some troubles might start - such as stealing to feed oneself and one's family. The challenge is simply to find things for people to do to feed themselves and to keep themselves occupied, apart from being occupied by non-action as would be through meditation.
But the greatest wisdom could be that there is a place on earth for each and everyone and somehow one should be able to live, the degree of comfort or pleasure may be determined purely by our own expectations of ourselves. Living in confidence is probably an important first step for living well with others, so that one is always prepared to share with one's neighbours which can only be easy when one has no worries about tomorrow.
To be able to live happily in the here and now is critical for living well with others, no matter who they may be.