If mommy's purse didn't belong in the microwave, why did it fit?

Ralph

Principal Skinner: You're not supposed to be able to get outside our network.
Nelson: You shouldn't have made your password, "password".
Principal Skinner: It was the name of the street I grew up on, Password Drive.

Willie: What's that?
Principal Skinner: We didn't want to leave you out of the digital revolution. Willie, meet your new supervisor.
Willie: I have to take orders from a machine?
Principal Skinner: Oh it can't speak, but should it ever learn, yes.

He's a hero all right, a hero sandwich full of bologna!

Ned

A TV star criticizing his writers, what has this world come to? Another bully for your collection boys.

Chief Wiggum

Homer: No no honey, I love everything you force me to do. And sometimes if you do all that, you get a very special night.
Bart: And what does that get you?
Homer: Hopefully not a you.

Bart, some of your biggest heroes are dancers. Krusty was on Dancing with the Stars until a panel of experts determined he wasn't a star.

Lisa

Milhouse: If it's the blue hair and the schnoz you're digging, I've got plenty more cousins.
Bart: Thanks Milhouse, I think I'm gonna steer clear of Van Houtens for awhile.
Milhouse: More for me, marrying a cousin worked out great for my parents.

Dad I apologize. I only say this at gunpoint, but it's true. I love you.

Homer

Abe: That's Mock Rickly, my old Air Force buddy.
Bart: You said you were in the Army.
Lisa: You said you were in the Navy.
Abe: That's the kind of mix up that used to happen when I was in the Marines.

Geez kids, guess you've had your last birthday. You're going to stay your current ages for the rest of your lives.

Marge

Homer: Isn't that sweet, six years ago they were fighting, now they're playing pool in a bar.
Moe: Father of the year, pal, father of the year.

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!

The Monorail Song
Lyle Lanley: Y'know, a town with money is like a mule with a spinning wheel. No one knows how he got it and danged if he knows how to use it!
(audience laughs)
Homer: Heh heh! Mule.
Lyle Lanley: The name's Lanley. Lyle Lanley. And I come before you good people tonight with an idea. Probably the greatest... Aw, it's not for you. It's more of a Shelbyville idea.
Mayor Quimby: Now wait just a minute! We're twice as smart as the people of Shelbyville! Just tell us your idea and we'll vote for it!
Lyle Lanley: All right, I tell you what I'll do. I'll show you my idea! I give you the Springfield Monorail! (audience gasps) I've sold monorails to Brockway, Ogdenville, and North Haverbrooke, and by gum, it put them on the map!
Well, sir, there's nothing on earth
Like a genuine,
Bona fide,
Electrified,
Six-car
Monorail! ...
What'd I say?
Ned Flanders: Monorail!
Lyle Lanley: What's it called?
Patty & Selma: Monorail!
Lyle Lanley: That's right! Monorail!
(crowd chants "Monorail" softly and rhythmically)
Miss Hoover: I hear those things are awfully loud.
Lyle Lanley: It glides as softly as a cloud.
Apu: Is there a chance the track could bend?
Lyle Lanley: Not on your life, my Hindu friend.
Barney: What about us brain-dead slobs?
Lyle Lanley: You'll all be given cushy jobs.
Grampa: Were you sent here by the devil?
Lyle Lanley: No, good sir, I'm on the level.
Chief Wiggum: The ring came off my pudding can.
Lyle Lanley: Take my pen knife, my good man.
I swear it's Springfield's only choice...
Throw up your hands and raise your voice!
All: Monorail!
Lyle Lanley: What's it called?
All: Monorail!
Lyle Lanley: Once again...
All: Monorail!
Marge: But Main Street's still all cracked and broken!
Bart: Sorry, Mom, the mob has spoken.
All: Monorail!
Monorail!
Monorail!
Monorail!
Homer: Mono... D'oh!