The famous ancient philosopher who insisted on "Know thyself" was Socrates, a foundational figure in Western philosophy. This phrase, often associated with the Delphic Oracle, underscores the importance of self-awareness and understanding one's own limitations and beliefs. Socratic philosophy emphasized questioning and dialogue as means to uncover ethical truths. Socratic methods encouraged individuals to examine their own lives and moral values critically, influencing future philosophical thought and nurturing a culture of inquiry. Socrates' teachings laid the groundwork for his students, notably Plato, and have continued to resonate throughout history in discussions of ethics and self-knowledge.