What is plato famous for?

He is generally famous for being Socrates' student, you probably know that. He gave a bunch of speeches, some of which include "Symposium". Some were more philosophical, like the Theory of Forms, which applies abstract and physical thinking to the plain of modern existence.

Plato is famous for being one of the most influential figures in Western philosophy, and his student Aristotle went on to have a similarly large impact on the world.

~Refrence.