-
469 BCE
Socrates (469-399 BCE)
Focused on virtue and ethical knowledge. -
427 BCE
Plato (427-347 BCE)
Emphasized justice and the Theory of Forms. -
384 BCE
Aristotle (384-322 BCE)
Introduced virtue ethics, focusing on character. -
354 BCE
Augustine (354-430 CE)
Combined Christian theology with ethics. -
341 BCE
Epicurus (341-270 BCE)
Advocated for pleasure as the foundation of ethics. -
334 BCE
Zeno of Citium (334-262 BCE)
Founded Stoicism, emphasizing rationality and virtue. -
1225
Thomas Aquinas (1225-1274)
Developed natural law theory, integrating Aristotle with Christianity.