Homer: (Wearing glasses) The sum of the square roots of any two sides of an isosceles triangle is equal to the square root of the remaining side!
Man: (From inside a bathroom stall.) That's a right triangle, you idiot!
Homer: D'oh!

Wow, now I see why they call you Miss Hoover. You must have been vacuuming for an hour.

Bart

You know, you remind me of a poem I can't remember, and a song that may never have existed, and a place I'm not sure I've ever been to.

Grampa

Mr. Burns: Oh, and one more thing: you must find the jade monkey before the next full moon.
Smithers Actually sir, we found the jade monkey. It was in your glove compartment.
Mr. Burns: And the road maps, and ice scraper?
Smithers: They were in there too, sir.
Mr. Burns: Excellent! It's all falling into place...

Homer: Marge, where's that... metal... dealy... you use to... dig... food?
Marge: You mean a spoon?
Homer: Yeah yeah yeah!

Dearest Edna, I must leave you. Why, I cannot say. Where, you cannot know. How I will get there, I haven't decided yet. But one thing I can tell you, any time I hear the wind blow it will whisper the name Edna. And so let us part with a love that will echo through the ages. ---Woodrow

"Woodrow"

Son, a woman is a lot like a... a refrigerator! They're about six feet tall, 300 pounds. They make ice, and um Oh, wait a minute! Actually, a woman is more like a beer. They smell good, they look good, you'd step over your own mother just to get one! But you can't stop at one, you wanna drink another woman!

Homer

Bones heal, chicks dig scars, and the United States of America has the best doctor-to-daredevil ratio in the world.

Lance Murdoch

Lisa: Mr. Blackheart, are you an ivory dealer?
Mr. Blackheart: Well, I've had lots of jobs in my day: whale hunter, seal clubber, president of the fox network. And, like most people, yeah I've dealt a little ivory.

Bart: Take him away, boys.
Chief Wiggum: Hey, I'm the chief here! Bake him away, toys.
Lou: What'd you say, chief?
Chief Wiggum: Do what the kid said.

Homer: Marge, try to understand. There are two kinds of college students: jocks and nerds. As a jock, it is my duty to give nerds a hard time.

Homer: Aw, twenty dollars? I wanted a peanut!
Homer's Brain: Twenty dollars can buy many peanuts.
Homer: Explain how!
Homer's Brain: Money can be exchanged for goods and services.

The Simpsons Quotes

Homer: (Wearing glasses) The sum of the square roots of any two sides of an isosceles triangle is equal to the square root of the remaining side!
Man: (From inside a bathroom stall.) That's a right triangle, you idiot!
Homer: D'oh!

Wow, now I see why they call you Miss Hoover. You must have been vacuuming for an hour.

Bart