This is important, because people who confuse “Stoicism” with “stoicism” (i.e., having a stiff upper lip) often think that it’s about suppressing feelings like anxiety, which they view as bad, harmful, or shameful. That’s not only bad psychology, it’s also totally in conflict with Stoic philosophy, which teaches us to accept our involuntary emotional reactions, our flashes of anxiety, as indifferent: neither good nor bad. What matters, in other words, isn’t what we feel but how we respond to those feelings.