Epictetus was born a slave, and became one of the most influential Stoic philosophers. Stoicism is the attitude allowing one to free oneself from the unnecessary suffering that arises from anxiety about events that are beyond our control; therefore, it can be of tremendous importance in one's life. According to Epictetus, our own actions and attitudes are the only thing in our control; whatever else happens, we should examine calmly and dispassionately, because no amount of suffering will change the impact of external events.