Stoicism, a school of Hellenistic philosophy founded in Athens by Zeno of Citium, posits that virtue is the only true good and that a wise person should remain indifferent to external circumstances. The Stoics argued that while we cannot control what happens to us, we have total control over our reactions and judgments. This internal mastery is what leads to eudaimonia, often translated as flourishing or happiness. Central to Stoic practice is the distinction between things that are up to us, such as our intentions and desires, and things that are not up to us, such as wealth, health, and reputation. By focusing exclusively on the former, the Stoic achieves a state of ataraxia, or untroubledness. Critics of Stoicism often argue that this emphasis on detachment leads to a lack of social concern or emotional coldness. However, the Stoics maintained that virtue involves fulfilling one's social roles and acting in accordance with reason, which necessitates contributing to the well-being of the community. For a Stoic, social action is not driven by an emotional attachment to the outcome, but by a rational commitment to duty.