Stoics seek steadiness, stability and tranquility, something that most of us aspire to experience long term, but only get to experience fleetingly. How do we accomplish this goal?
Epictetus tells us through his writing of Discourses, “The essence of good is a certain kind of reasoned choice; just as the essence of evil is another kind. What about externals, then? They are only the raw material for our reasoned choice, which finds its own good or evil in working with them. How will it find the good? Not by marveling at the material! For if judgements about the material are straight that makes our choices good, but if those judgements are twisted, our choices turn bad.” [Discourses, 1.29.1-3]
So how do we accomplish stability and tranquility? We filter the outside world through the straightener of our judgement. That’s what reason can do, it takes the crooked, confusing and overwhelming nature of external events and make them orderly.
However, if our judgements are crooked because we fail to use reason, then everything that comes next will remain crooked and we lose our ability to stabilise ourselves in the chaos of the world. Proper judgement allows us to achieve clarity.