Season 7, Episode 9: "The Sponge"

People can be so vain.

I have a friend, wears eyeglasses, no prescription...

...because he thinks he looks more intelligent.

Now, why? Why do we think...

...that glasses makes us look more intelligent?

Is it from the endless hours of reading and studying and researching...

...that this person supposedly blew out their eyeballs?

And that's why they need the glasses?