Antisthenes, a pupil of Socrates, founded the Cynic school of philosophy, which advocated an ascetic lifestyle. Aristippus, another pupil of Socrates, founded the Cyrenaic school, which advocated a hedonistic lifestyle. In between these extremes, we find, among many other schools, the Epicurean school, the Skeptic school, and, of most interest to us here, the Stoic school, founded by Zeno of Citium.