One of the great Greek philosophers, he has basically built the foundation for all metaphysical philosophy and thought. He wrote on many different kinds of scientific subjects and knowledge.
While a lot of his ideas are wrong, we still use a lot of the frameworks and systems he used to come up with those ideas.
Almost every era that has discussed metaphysics or epistemology has interacted with Aristotle. We converse with Aristotle every day. Therefore, all the ideas we use today only really become ideas after they have gone through Aristotle’s teachings.