He was the teacher of Plato, who was in turn the teacher of Aristotle.
6 seconds sound clip from the Bill & Ted's Excellent Adventure movie soundboard.
You can hear this line at 01:15:14 in the Blu-ray version of the movie.
Quote context
[...]
- Mr. Ryan, fellow distinguished classmates, teachers, babes.
- Our first speaker was born in the year 470 B.C.
- A time when much of the world looked like the cover of the Led Zeppelin album Houses of the Holy.
- We were there. There were many steps and columns, it was most tranquil.
- He is sometimes known as the father of modern thought.
- He was the teacher of Plato, who was in turn the teacher of Aristotle.
- And like Ozzy Osbourne, was repeatedly accused of corruption of the young.
- And since he doesn't speak English, my friend Ted here, is going to interpret for him.
- Totally out of control. And I think I got a pretty good idea where he gets it from.
[...]