Introduction
Welcome to your next lesson in Hellenistic philosophy. In our last two lessons, we explored Epicureanism, a school that seeks tranquility (ataraxia) by mastering the art of pleasure. We saw how their atomistic physics led to the ethical conclusion that death is "nothing to us," thereby aiming to remove the greatest source of human anxiety.
Today, we turn to the second major Hellenistic school: Stoicism. The Stoics also sought tranquility, but they charted a very different course. Instead of focusing on pleasure, their ethics is grounded in virtue, reason, and accepting the rational order of the universe.
The learning outcome for this lesson is to distinguish between what is 'up to us' and what is not in Stoic ethics. This distinction, often called the "dichotomy of control," is the absolute cornerstone of Stoic practice. For the Stoics, particularly the Roman philosopher Epictetus (c. 50–135 AD), understanding and applying this distinction is the key to freedom, happiness, and a resilient mind.
The Foundational Distinction: Epictetus's Enchiridion
Our main guide for this topic will be Epictetus, a former slave who became one of the most influential Stoic teachers. His teachings were compiled by his student Arrian into the Discourses and a short, practical summary called the Enchiridion, or "Handbook." The very first chapter of the Enchiridion lays out the fundamental principle we are studying today.
To begin, let's engage directly with this foundational text through a guided commentary.
Epictetus, The Enchiridion, chapter 1 | A Line By Line Commentary by Dr. Gregory B. Sadler
This video by Dr. Gregory B. Sadler provides a line-by-line commentary on the opening chapter of Epictetus's Enchiridion. It will introduce you to the two famous lists: the things that are under our control and those that are not.
Please watch the video from the beginning to 09:51. Pay close attention to: The two lists Epictetus provides for what is and is not in our control (00:00 - 02:58). Dr. Sadler's explanation of the items that are 'in our control,' such as conception, choice, desire, and aversion (03:58 - 06:05). His explanation of the items 'not in our control,' such as the body, property, and reputation, and why they are considered 'weak' and 'slavish' (06:05 - 09:51).
As you saw in the video, Epictetus draws a sharp line between two spheres of experience:
| Up to Us (Our own doing) | Not Up to Us (Not our own doing) |
|---|---|
| Conception (Judgments, Opinions) | Body (Health, appearance, etc.) |
| Choice (Impulse) | Property (Possessions) |
| Desire | Reputation (What others think of us) |
| Aversion | Office (Social status, career) |
| In a word: our own actions and judgments | In a word: external events and outcomes |
This distinction is absolute for the Stoics. The things in the first column are described as "by nature free, unhindered, and unimpeded," while those in the second are "weak, servile, subject to hindrance, and not our own."
Deepening the Distinction: Control vs. Influence
A common and understandable reaction to this list is to object: "But I do have some control over my health or my reputation!" You can choose to exercise and eat well; you can act in ways that encourage a good reputation.
This is a crucial point that the Stoics were well aware of. The key is to distinguish between influence and absolute control. You can influence your health, but you cannot absolutely control it—you can still get sick or injured. You can influence your reputation, but you cannot control what other people ultimately think of you.
The following video clarifies this vital difference.
Epictetus, Discourses | What Is and What Isn't in our Control | Philosophy Core Concepts
In this video, Dr. Sadler addresses the common objection that we seem to have some stake in 'external' things. He clarifies that having influence is not the same as the kind of complete control the Stoics reserve for our inner world.
Watch from 03:06 to 11:59. Notice how Dr. Sadler explains that while your actions can affect external outcomes (like health or wealth), the final result is never guaranteed and is always subject to factors beyond your control.
To give this concept more philosophical precision, Epictetus uses the Greek term prohairesis. This term is often translated as 'volition', 'moral character', or 'the faculty of choice'. For Epictetus, your prohairesis is your true self. It is the part of you that assesses impressions, forms judgments, and makes choices. Everything else—your body, your career, your relationships—are "externals," the raw material upon which your prohairesis acts.

Let's read a short academic analysis of this key term.
Epictetus - Stanford Encyclopedia of Philosophy
The Stanford Encyclopedia of Philosophy offers a concise and rigorous explanation of prohairesis. This will help solidify your understanding of what, precisely, the Stoics identify as being 'up to us.'
Please read sections 4.3 ('Volition') and 4.4 ('Value'). Focus on these points: How prohairesis is defined as the 'true self' of the individual. The distinction between what is 'internal to the sphere of volition' and what is 'external' to it. The radical conclusion that only the 'disposition of one's volition' (the state of your character) can be truly good or bad.
This reading brings us to a crucial point: For the Stoics, things like health, wealth, and reputation are not good or bad in themselves. They are "indifferents." The only thing that is truly good is a virtuous and rational prohairesis, and the only thing that is truly bad is a corrupt and irrational one.
The Ethical Goal: Why This Distinction Is Everything
Now we can ask the most important question: Why is this distinction so central to Stoic ethics?
The answer is that it is the direct path to ataraxia. Epictetus argues that all human suffering—grief, fear, anger, anxiety, frustration—stems from a single fundamental error: mistaking things that are "not up to us" for things that are good or bad, and attaching our well-being to them.
If you believe that having wealth is essential for your happiness, you will be in a constant state of anxiety about losing it or failing to acquire more. If your sense of self-worth depends on your reputation, you make your happiness a hostage to the opinions of others. You are, in Epictetus's terms, a slave to externals.
Freedom and happiness, therefore, can only be found by placing all your value on what you can completely control: the quality of your own judgments, choices, and actions.
Epictetus, The Enchiridion, chapter 1 | A Line By Line Commentary by Dr. Gregory B. Sadler
Let's return to Dr. Sadler's commentary on the Enchiridion. He now explains the psychological consequences of either succeeding or failing to apply the dichotomy of control.
Watch from 11:55 to 18:02. Focus on the sharp contrast Epictetus draws: The person who gets the distinction wrong will be 'hampered, will grieve, will be in turmoil, and will blame both gods and men.' The person who gets it right will be free from compulsion and hindrance, will blame no one, and will have 'no personal enemy.'
So, how does a practicing Stoic use this in daily life? The method is an exercise sometimes called the "Discipline of Assent." It involves pausing to examine your initial reactions—your "impressions"—to events.
Epictetus | Internet Encyclopedia of Philosophy
The Internet Encyclopedia of Philosophy provides a clear description of this practical Stoic exercise, quoting directly from Epictetus's Handbook.
Please read the section 'iii. The Discipline of Assent,' focusing on the quote from Handbook 1.5. This quote is a direct command from Epictetus on how to handle any 'harsh impression.'
The instruction is stark and practical: "test it... 'Is it concerned with what is in our power or with what is not in our power?' And if it is concerned with what is not in our power, be ready with the answer that it is nothing to you."
This doesn't mean you should be callous or passive. You should still take care of your health, do your job well, and be a good friend. The Stoics would call these "preferred indifferents." But you must do so with the understanding that the outcome is not in your control and, therefore, your ultimate well-being and tranquility do not depend on it. Your focus should be on playing your part virtuously and rationally, regardless of the result.
Conclusion
In this lesson, we have explored the foundational principle of Stoic ethics: the distinction between what is "up to us" and what is "not up to us." This is not merely an intellectual exercise but a practical tool for reorienting one's life towards resilience and tranquility.
Here are the key takeaways:
- The Dichotomy of Control: Stoic ethics is built on separating what is within our absolute control (our prohairesis: judgments, choices, desires, aversions) from what is not (externals like our body, property, reputation, and outcomes).
- Control vs. Influence: We can influence externals, but we cannot control them. The Stoics urge us to focus our energy and value only on the sphere of absolute control.
- The Source of Suffering: All negative emotions arise from the fundamental error of attaching our sense of good and bad to things that are not up to us.
- The Path to Tranquility: Freedom and happiness (ataraxia) are achieved by placing value exclusively on the quality of our own moral character (prohairesis) and accepting external events as they come, knowing they cannot harm our true self.
- Practical Application: The "Discipline of Assent" is the daily practice of examining our impressions and dismissing those related to things outside our control with the thought, "This is nothing to me."
You now understand the Stoic framework for determining what is truly important. In our next lesson, we will build upon this foundation to explore the Stoic ideal of living according to nature. We will ask: now that we know to focus on our choices, how do we know which choices are the right ones? The Stoic answer lies in using our reason to live in harmony with our own human nature and with the rational order of the cosmos.
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