A painting that is not a photograph
The School of Athens is a fresco by Raphael, painted around 1509 to 1511 in a room of the papal apartments in the Vatican. It shows a gathering of ancient thinkers in a grand vaulted hall. No such meeting ever happened: the figures lived across several centuries, and the identifications of many of them are traditional guesses rather than documented facts. The two figures at the centre are generally accepted as Plato and Aristotle, and that pairing is why the picture is a convenient entry point.
Plato, on the left, points a finger upward; Aristotle, beside him, holds his hand out flat over the ground. Interpreters commonly read this as a summary of their positions: Plato looks beyond the visible world to unchanging realities, while Aristotle looks at things around us. It is a useful shorthand, with the caveat that the picture is a Renaissance interpretation and the philosophers’ own views were more complicated.
Plato and the Academy
Plato was born in Athens around 427 BCE into an aristocratic family and was a close follower of Socrates. Socrates’ execution by an Athenian jury in 399 BCE left a deep impression on him. After travelling, including visits to Sicily, he founded his school around 387 BCE in a grove outside the city walls dedicated to the hero Akademos. That is where the word “academy” comes from.
The Academy was not a university in the modern sense, but a community for discussion, research and teaching, especially in mathematics, dialectic and political theory. Plato wrote dialogues, in which Socrates is often the leading speaker, rather than treatises. This makes it hard to say which views were his own and which belong to a character. Among the best known is the Republic, which asks what justice is and imagines a city ruled by those trained in philosophy.
The central teaching associated with Plato is the theory of Forms. In his view, the beautiful or just things we encounter are imperfect copies of an unchanging Form of Beauty or Justice that the mind can grasp through reasoning rather than the senses. Knowledge, in this picture, is more than opinion, because it concerns what is stable. Plato was also suspicious of rule by the majority and criticised Athenian democracy in the Republic, partly because it had condemned his teacher. His late dialogue Timaeus offers a cosmology in which a craftsman-like creator orders the world. It and the unfinished Critias are also the only ancient sources for the story of a lost island that later fed the Atlantis in Plato debate, which Plato presented within a philosophical discussion rather than as a record of history.
The Academy remained active for centuries under various leaders and took on different outlooks, including a sceptical phase. A school of Platonic philosophy persisted in Athens until the sixth century CE, with traditional accounts placing its closure in 529 CE under the emperor Justinian, although the historical details are debated.
Aristotle and the Lyceum
Aristotle was born in Stagira in northern Greece in 384 BCE. He joined Plato’s Academy as a teenager and stayed for about twenty years, until Plato’s death around 347 BCE. He later spent time in Asia Minor and Macedon, where he is said to have tutored the young Alexander, the future king, before returning to Athens around 335 BCE and starting his own school in the Lyceum, a public gymnasium. The group became known as the Peripatetics, probably because of the covered walkway (peripatos) where they discussed ideas. Aristotle left Athens near the end of his life, as anti-Macedonian feeling rose after Alexander’s death, and died in 322 BCE.
His surviving works are mostly notes and lecture treatises, not polished dialogues. They span logic, physics, biology, ethics, politics and poetics. He collected observations of animals and plants, and he organised knowledge into fields in a way that influenced European learning for centuries.
Where they agreed and where they differed
Aristotle respected Plato but questioned the theory of Forms. If the Form of a horse exists apart from horses, he asked, how does it explain any particular horse? His alternative was that form is present within individual things; a living thing’s form is its organised way of functioning, and understanding it means studying real specimens. This led him toward observation, classification and a search for causes, including purposes (the idea that an acorn is for growing into an oak).
Ethics shows a similar contrast. Both thought the goal of life is flourishing (eudaimonia) achieved through virtue and reason. Plato linked this to knowledge of the Good. Aristotle was more practical: virtue is a settled habit of choosing well, often a balance between extremes, as developed in his doctrine of the mean, and it requires practical judgment as well as theory. Both distrusted a purely democratic polity, but Aristotle compared actual constitutions, whereas Plato sketched an ideal city.
They also differed on nature. In Plato’s Timaeus the elements are described in terms of geometric shapes. Aristotle kept the familiar four elements theory for things below the Moon but added a fifth element, aether, for the heavenly bodies. These details were widely taught long after both men were gone.
Reading the fresco with care
Raphael’s Plato holds the Timaeus, and Aristotle holds a book often identified as the Nicomachean Ethics, a choice that reinforces the contrast between a cosmic vision and a practical study of human life. The gestures are a visual shorthand, and not a historical record. The painting also gathers many others, such as Pythagoras, Heraclitus, Diogenes and Euclid in later interpretations, but these identifications vary and should be treated as suggestions.
The more important point is that these two teachers set up the two main ways of working in the tradition: reaching for general principles by reasoning, and gathering evidence from the world. Many later debates, including some that continue today, are variations on the question where they began. Plato’s dialogue Symposium, set at a drinking party much like a real Greek symposium, is a reminder that these debates took place in the social life of Athens as much as in formal lessons.