The Dichotomy of Control

The handbook of Epictetus opens with a single distinction, and the whole of his teaching rests upon it. Some things, he says, are up to us, and some are not. It sounds almost too simple to bear the weight placed on it. Yet worked through carefully, this one observation reshapes how a person relates to fortune, to other people, to their own emotions and to the unfolding of events. This article follows the idea from its bald statement through the psychology that makes it work, the misreadings that dog it, and the hard questions about fate and freedom that lie beneath it.

Epictetus divides everything we encounter into two classes. In the first are the things that are, in his phrase, up to us, within our power. In the second are the things that are not. Within our power, he says, are our judgements, our impulses to act, our desires and our aversions, in short, the activities of our own mind. Not within our power are our body, our property, our reputation, our position in the world, and, more broadly, anything that is not our own doing.

The first class, he observes, is by nature free, unhindered and unobstructed. No one can force your judgement or compel your assent from the outside. The second class is weak, dependent and belongs to others, in the sense that it can be taken, blocked or spoiled by forces beyond you. The whole art of living, on this account, begins with getting the boundary right, and with investing your hopes and your sense of self only in what genuinely lies on your side of it.

It is easy to read Epictetus’s “up to us” too loosely, as though he meant everything we can influence. He meant something far narrower and more radical. At the centre of his thought is what he calls the prohairesis, a Greek term variously rendered as choice, volition, will or the faculty of judgement. It is the part of us that assents to impressions, forms intentions and gives or withholds approval. For Epictetus this faculty, and this faculty alone, is fully and inviolably our own.

The consequence is striking. Your body can be chained, but not your will to it. Your property can be seized, your name blackened, your plans wrecked, and through all of it the citadel of the prohairesis stands untaken unless you surrender it. Epictetus, who had been a slave, knew the difference between what can be done to a person and what a person can be made to think and choose. When he says that the things up to us are free by nature, he is making a claim about the one province of human life that no tyrant, no accident and no loss can finally invade.

To see how the dichotomy works in practice, we need a piece of Stoic psychology. The Stoics held that the mind is continually struck by impressions, in Greek phantasiai: an impression is how something presents itself to us, the news that the world delivers moment by moment. An impression often comes with a value judgement folded into it, “this is a disaster,” “I have been wronged,” “this is unbearable.”

Crucially, the Stoics argued that we are not compelled to accept these impressions at face value. Between the impression and our full-blown reaction lies an act of assent, in Greek sunkatathesis, the mind’s yes or no to what is presented. We cannot stop the first impression from arriving, but we can examine it, test whether it is true, and grant or refuse our agreement. This act of assent is precisely what falls within the prohairesis, and so within the things that are up to us.

Here is the deep root of Epictetus’s famous remark that people are disturbed not by things but by their judgements about things. The event itself, the loss, the insult, the setback, belongs to what is not up to us. The judgement that turns it into a catastrophe is an act of assent, and that is ours to govern. The dichotomy of control is, at bottom, the practical face of this theory of mind: it directs our effort to the one operation, the giving of assent, where effort actually lands.

A natural objection arises. Surely many things are neither fully up to us nor entirely out of our hands. Whether I win the match, keep the job or recover from illness depends partly on my effort and partly on circumstance. Does the stark two-way split do justice to this large middle ground?

The contemporary philosopher William Irvine proposed reframing the idea as a trichotomy of control: things we have complete control over, things we have no control over, and things we have some but not complete control over, such as outcomes we can influence but not guarantee. For the third class, he suggests, we should internalise our goals, aiming not at the external result but at playing our own part well.

Many scholars of Stoicism reply that Epictetus already accounts for this, and that the original dichotomy is more careful than it first appears. On the traditional view, the only thing strictly up to us is our own activity of judging, desiring and choosing, our prohairesis. Outcomes, including those we influence, simply fall on the other side of the line: they are not up to us, even when our action is one of their causes. What Irvine treats as a separate third category, the Stoics handle by a different device, the reserve clause, to which we now turn. The disagreement is partly verbal, but it is worth understanding, because it clarifies what the dichotomy is really dividing. It divides not the influenceable from the uninfluenceable, but the willed from everything else.

If outcomes are not up to us, why act at all? Because acting well is up to us, and that is the whole of our proper business. The Stoics captured the right posture toward results in what they called the reserve clause. The wise person undertakes their projects fully and wholeheartedly, but with an inward reservation: I will do this, fortune permitting. They set their heart on acting rightly, and add, under the breath, that whether the world cooperates is not theirs to decide.

Return to the archer. The archer does everything in their power to make a good shot, then releases the arrow. Once it has left the bow, its flight is no longer up to them. The Stoic invests their effort and their sense of success entirely in the quality of the shooting, and holds the result with an open hand. This is the practical genius of the dichotomy. It lets a person act with full commitment and care, and yet remain unbroken when the result goes against them, because their wellbeing was staked on the part that was always theirs.

This is also what divides Stoicism cleanly from resignation. The Stoic is not indifferent to outcomes in the sense of not caring whether good or ill comes about; they prefer the good and work for it. They are indifferent only in the sense of not letting the outcome decide whether they have lived well today.

Because the dichotomy is so often quoted in isolation, it attracts a cluster of misunderstandings worth naming directly.

Beneath the practical advice lies a genuine philosophical difficulty. The Stoics were determinists. They held that the cosmos is bound together by an unbroken chain of cause and effect, which they called fate, so that everything that happens does so necessarily, given what came before. But if all is fated, in what sense is anything up to us? How can our assent be free if it too is part of the causal order?

This was no idle worry for the Stoics, and Chrysippus addressed it with care. His answer is a form of what philosophers now call compatibilism: the view that determinism and a meaningful kind of human responsibility can both be true. He illustrated it with the image of a cylinder. Give a cylinder a push and it rolls; the push is the external cause, but that it rolls, rather than slides or topples, follows from its own shape. Just so, an impression may strike us from outside, but whether we assent to it flows from our own character, our trained or untrained mind. The external impression is the push; the assent is the roll, and the roll expresses what we are. Our actions are fated, but they are fated to come about through us, through our own judgement, and that is what makes them ours.

Chrysippus also had to answer a clever piece of fatalist reasoning known as the lazy argument. If it is fated that you will recover from your illness, it ran, then you will recover whether or not you call the doctor, so why bother? His reply was that some events are co-fated. It may indeed be fated that you recover, but fated precisely through your calling the doctor; the two are bound together, and you cannot have the one while neglecting the other. Fate does not act around our choices. It acts through them. This is why the Stoic, far from being lulled into passivity by belief in fate, is spurred to act: their action is the very channel through which what is to be comes to be.

We need not settle these ancient arguments to feel their force. They show that the dichotomy of control is not a self-help slogan bolted onto the surface of Stoicism, but the practical expression of a fully worked-out picture of mind, cause and freedom. To divide the world into what is and is not up to us is, in the end, to locate the small but unconquerable territory of the human will, and to make our home there.