Oikeiosis
This week's concept is oikeiosis (pronounced oy-KAY-oh-sis), a Greek word that means something like "affiliation" or "belonging": the natural process by which you recognize yourself in others and extend genuine care outward from yourself to all of humanity. The Stoics saw oikeiosis not as a sentimental feeling but as a rational perception. You come to see that other people share the same nature as you, and that your own flourishing is bound up with theirs. Over this week, you will trace oikeiosis from its first, most personal circle (your own self) all the way out to the whole human race, and learn how to live that connection on purpose.
Passage
The consideration of the duties pertaining to [our other] kindred is consequent to the discussion of those that pertain to parents, brothers, wives, and children; for the same things may, in a certain respect, be said of the former as of the latter; and on this account may be concisely explained. For, in short, each of us is, as it were, circumscribed by many circles; some of which are less, but others larger, and some comprehend, but others are comprehended, according to the different and unequal habitudes with respect to each other. For the first, indeed, and most proximate circle is that which every one describes about his own mind as a centre, in which circle the body, and whatever is assumed for the sake of the body, are comprehended. For this is nearly the smallest circle, and almost touches the centre itself. The second from this, and which is at a greater distance from the centre, but comprehends the first circle, is that in which parents, brothers, wife, and children are arranged. The third circle from the centre is that which contains uncles and aunts, grandfathers and grandmothers, and the children of brothers and sisters. After this is the circle which comprehends the remaining relatives. Next to this is that which contains the common people, then that which comprehends those of the same tribe, afterwards that which contains the citizens; and then two other circles follow, one being the circle of those that dwell in the vicinity of the city, and the other, of those of the same province. But the outermost and greatest circle, and which comprehends all the other circles, is that of the whole human race .
— Hierocles, Ethical Fragments 5.1
Reflection
Hierocles opens with a precise and striking image: you are standing at the centre of a set of concentric circles, and each circle holds a different ring of people, from your body and closest self outward to all of humanity. This is oikeiosis made visible. The concept begins right here, with you. The Stoics taught that the first and most natural form of belonging is the relationship you have with yourself: your own mind, your own body, your own existence. Before you can genuinely extend care to anyone else, you need to understand that this self-concern is not selfishness; it is the seed from which all other belonging grows. Every wider circle depends on the reality of the one at the centre.
Go deeper
When you picture the innermost circle, the one that holds only you, what does it actually contain that you feel responsible for, and what have you been treating as central that perhaps belongs in a farther ring?
Practice
Draw Your Circles
Take a piece of paper and sketch Hierocles' concentric circles loosely from memory. In the innermost circle write two or three words for what you consider most truly 'you', not your roles, but your character, your mind, your values. In each outer ring, write the names or categories of people who belong there. Don't overthink the placement; just let the image settle. Sit with it for a moment and notice which circle feels most alive to you right now, and which feels most distant.