Mal: Try to see past what she is, and on to what she can be.
Zoe: What's that, sir?
Mal: Freedom, is what.
Mal: We're still flying.
Simon: That's not much.
Mal: It's enough.
Everyone's favorite Captain Tightpants, Malcolm Reynolds.
Jayne!
The Man they call Jayne!
He robbed from the rich and he gave to the poor,
He stood up to the man and he gave him what for.
Our love for him now, ain't hard to explain,
The hero of Canton, the man they call Jayne!
The tagline of the Firefly Serenity movie is "They aim to misbehave." - reminded me of some other characters who like to do this... A Firefly / Despicable Me mash-up.
While I think it's pretty obvious, some people have said they need to be in a state of serenity to see it, like how you feel after you've spent the evening chasing a firefly in your garden.