How did Socrates, Plato, and Aristotle influence Greek philosophy?

Socrates, Plato, and Aristotle are the three seminal figures of ancient Greek philosophy, each profoundly shaping the trajectory of Western thought.1

Socrates

Socrates (c. 470–399 BCE) shifted the focus of philosophy toward ethics and the examination of human life. He did not teach directly but used the Socratic method—a form of cross-examination—to expose inconsistencies in his interlocutors' beliefs, ultimately revealing their ignorance. His commitment to moral integrity and his insistence that "the unexamined life is not worth living" established him as a moral exemplar whose influence persisted through antiquity and into modern times.1234

Plato

Plato, Socrates' most important disciple, expanded upon his teacher's method to develop a comprehensive philosophical system. He is best known for his theory of Forms, which posits that the physical world is an imperfect copy of an eternal, higher realm of reality. By using the Socratic method as a starting point, Plato addressed broader metaphysical and epistemological questions, influencing centuries of philosophy through his dialogues and his Academy.3562

Aristotle

Aristotle, a student of Plato, moved beyond his predecessors by establishing the systematic study of logic. He developed the syllogistic method and introduced the use of variables to achieve a high level of abstraction and generality. While he valued the Socratic search for definitions, he criticized Plato’s theory of Forms and Socrates' intellectualized view of the psyche, instead categorizing knowledge into distinct theoretical sciences such as physics and metaphysics.72