Aristotle (Greek: Aristotélēs) (384 BC –  322 BC) was a Greek philosopher, a student of Plato and teacher of Alexander the Great. He wrote on diverse subjects, including physics, metaphysics, poetry (including theater), logic, rhetoric, politics, government, ethics, biology and zoology. Along with Socrates and Plato, he was among the most influential of the ancient Greek philosophers, as they transformed Presocratic Greek philosophy into the foundations of Western philosophy as it is known today. Some researchers credit Plato and Aristotle with founding two of the most important schools of ancient philosophy, while others consider Aristotelianism to be a development and concretization of Plato's insights.