Final answer:
According to Epictetus and the Stoics, virtue is to act according to nature. The Stoics believed in aligning actions with the natural order of the universe and living according to reason and rationality.
Step-by-step explanation:
According to Epictetus and the Stoics, virtue is to act according to nature. The Stoics believed that humans should align their actions with the natural order of the universe and live in accordance with reason and rationality. They emphasized the importance of self-control and the avoidance of strong emotions that can lead to false judgments and the loss of freedom. By acting virtuously and in harmony with nature, individuals can achieve inner tranquility and live a fulfilling life.