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Plato

Plato was an ancient Greek philosopher of Classical Athens, usually dated to 428/427–348/347 BCE.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Plato was an ancient Greek philosopher of Classical Athens, usually dated to 428/427–348/347 BCE. He was a student of Socrates, later taught Aristotle, founded the Academy in Athens, and wrote influential philosophical dialogues that helped shape Western philosophy. Plato’s ideas are foundational in philosophy courses taught at Canadian universities and in broader Canadian humanities education.

Life

Plato was born in Athens to an aristocratic family around 428/427 BCE and died there around 348/347 BCE. Ancient and modern sources broadly agree on these dates, though the exact year remains approximate.

Philosophy

Plato’s thought developed into a wide-ranging system later called Platonism. Major themes in his work include the theory of Forms, ethics, political philosophy, epistemology, and metaphysics.

Works

Plato is known for philosophical dialogues rather than treatises. His most famous work is the Republic, and other well-known dialogues include the Symposium, Phaedo, Phaedrus, Meno, and Timaeus.

Academy

Plato founded the Academy in Athens, an institution devoted to higher learning and philosophical inquiry. It became one of the most important educational centres of the ancient world.

Key facts

  • Plato was an ancient Greek philosopher and one of the most influential figures in Western thought.
  • He studied under Socrates and later taught Aristotle.
  • He founded the Academy in Athens, which many consider the first Western university.
  • Plato wrote philosophical dialogues, with at least 25 surviving works attributed to him.
  • His philosophy is closely associated with the theory of Forms and the dialogue form.
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Canadian context

Plato’s ideas are foundational in philosophy courses taught at Canadian universities and in broader Canadian humanities education.

Frequently asked questions

Who was Plato?
Plato was an ancient Greek philosopher of Classical Athens and one of the foundational thinkers in Western philosophy.
What is Plato best known for?
He is best known for the Republic, the theory of Forms, and for founding the Academy in Athens.
Was Plato a student of Socrates?
Yes. Plato studied under Socrates and later became the teacher of Aristotle.
What did Plato write?
Plato wrote philosophical dialogues, with at least 25 works commonly attributed to him.
What was the Academy?
The Academy was Plato’s school in Athens and is often described as the first Western university.

References

  1. Encyclopaedia Britannicahttps://www.britannica.com/biography/Plato
    Supports: Birth/death dates, student of Socrates, teacher of Aristotle, founding of the Academy, major works, and general significance.
  2. Stanford Encyclopedia of Philosophyhttps://plato.stanford.edu/entries/plato/
    Supports: Plato’s identity, influence, and importance in Western philosophy.
  3. Encyclopaedia Britannicahttps://www.britannica.com/summary/Plato
    Supports: Overview of Plato’s role with Socrates and Aristotle and his philosophical system.
  4. MacTutor History of Mathematics (University of St Andrews)https://mathshistory.st-andrews.ac.uk/Biographies/Plato/
    Supports: Birth/death dates, Academy, and influence on mathematics education.
  5. Internet Encyclopedia of Philosophyhttps://iep.utm.edu/plato/
    Supports: Theory of Forms and broad themes in Plato’s philosophy.