Recently a historian of philosophy named Wolfgang Mann wrote a book called The Discovery of Things. He argues, just as the title of his book suggests, that Aristotle discovered things. It’s a bookabout the distinction between subject and predicate in Aristotle’s Categories—between what is and how it is. You may not have realized this but: someone had to come up with that! Many of the things that seem obvious to you—that human beings have basic rights, that knowledge requires justification, that modus ponens is a valid syllogistic form, that the world is filled with things—people had to come up with those ideas. And the people who came up with them were philosophers.
So you are pretty much constantly thinking thoughts that, in one way or another, you inherited from philosophers. You don’t see it, because philosophical exports are the kinds of thing that, once you internalize them, just seem like the way things are. So the reason to read Aristotle isn’t (just) that he’s a great philosopher, but that he’s colonized large parts of your mind.