Lisa Marie Simpson, voiced by Yeardley Smith, is Homer and Marge's oldest duaghter and the middle child on The Simpsons.  Lisa is very intelligent, plays the saxophone, is a vegetarian, Buddhist, and definitely a bit of a young political activist.  She's basically the complete opposite of her brother, Bart.

Lisa Simpson Quotes

Homer: Oh, I get it, you're all going to try to convince me that my life is great just like it is, right?
Lisa: Are you kidding? We couldn't even convince you that Bruce Wayne is Batman.
Homer: Oh, come on, that billionaire playboy. He's too busy socializing at cocktail parties and managing the affairs of the Wayne foundation
Marge: (whispering) Don't open this one again.
Lisa: Why does he think Alfred is friends with Batman?
Marge: Just stop.

Anya: (in a girls voice) "Dear Lisa, as write this, I am very sad. Our president has been overthrown...(man's voice) and replaced by the benevolent General Krull! All hail Krull, and his glorious new regime! Sincerely, little girl."
Lisa: (groans)

The Simpsons Quotes

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


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!