Serenity

— Do you know what your sin is, Mal?
— Hell. I'm a fan of all seven.

— But I like to hear you say it.
— Love. You can learn all the math in the 'verse, but you take a boat in the air that you don't love, she'll shake you off just as sure as the turn of the worlds. Love keeps her in the air when she ought to fall down, tells you she's hurting before she keels. Makes her a home.

— You told me those entry couplings would hold for another week!
— That was six months ago, Captain.

Do you know what the definition of a hero is? Someone who gets other people killed.

Shepherd Book used to tell me, "If you can't do something smart, "do something right."

— ...anding is gonna get pretty interesting.
— Define "interesting."
— "Oh, God, we're all gonna die?"
— This is the captain. We have a little problem with our entry sequence, so we may experience some slight turbulence and then explode.