The ancient philosopher who taught the concepts of ethics and morality in ancient Athens is Socrates. Renowned for his Socratic method, Socrates engaged individuals in dialogue, encouraging them to question their beliefs and gain a deeper understanding of ethical principles. His focus on virtue and the examination of one’s life influenced many subsequent philosophers, shaping Western philosophical thought. Although he left no written records, Socrates' ideas, primarily conveyed through the works of his students like Plato, continue to resonate in modern discussions of ethics and morality.