Oikeiosis
This week you are learning about oikeiosis (pronounced oy-KAY-oh-sis), a Greek word that means something like "affiliation" or "the sense of belonging to." The Stoics used it to describe the natural impulse that draws you first toward yourself, then outward toward family, neighbors, and finally all of humanity. Understanding oikeiosis is the foundation of Stoic ethics on friendship and loyalty: it explains not just why you care about the people you love, but why that care, properly developed, should eventually extend to every person you meet.
Passage
For that is an absurd position which is taken by some people, who say that they will not rob a parent or a brother for their own gain, but that their relation to the rest of their fellow-citizens is quite another thing. Such people contend in essence that they are bound to their fellow-citizens by no mutual obligations, social ties, or common interests. This attitude demolishes the whole structure of civil society. Others again who say that regard should be had for the rights of fellow-citizens, but not of foreigners, would destroy the universal brotherhood of mankind; and, when this is annihilated, kindness, generosity, goodness, and justice must utterly perish; and those who work all this destruction must be considered as wickedly rebelling against the immortal gods. For they uproot the fellow ship which the gods have established between human beings, and the closest bond of this fellow ship is the conviction that it is more repugnant to Nature for man to rob a fellow-man for his own gain than to endure all possible loss, whether to his property or to his person . . . or even to his very soul — so far as these losses are not concerned with justice; 3 for this virtue is the sovereign mistress and queen of all the virtues.
— Cicero, On Duties 3.28
Reflection
Cicero turns sharp here. He says that people who limit their moral concern to family, or to fellow citizens, and exclude everyone else are not just being selfish; they are pulling apart the very fabric of society. This is the stress test for oikeiosis: it is easy to feel affiliated with people who already feel close. The harder and more important question is what you do when your self-interest tempts you to treat an outsider as having no claim on you at all. Cicero's answer is that Nature herself finds it more wrong to harm another person for your own gain than to suffer loss yourself.
Go deeper
Can you recall a time when you justified treating someone from an outer circle worse than you would have treated someone close to you, and looking back, what did that cost both of you?
Practice
Spot the Exemption
Sit quietly for five to eight minutes and think back over the past week. Look for a moment when you gave yourself a private exemption: you were less honest, less patient, or less fair to someone because they were a stranger, a customer, a person you would never see again. Write one sentence describing what happened. Then write one sentence about what you could have done instead.