Smallville, Season 5

Clark:
You say "human" like it's a bad thing.

Professor Fine:
Just going off what I've seen. This race shows promise, but at this point in history, they are still duplicitous by their very nature. Even the ones you think you love can't be trusted.

Clark:
You don't know anything about this race. Yeah, they can be petty and dishonest and betray each other over nothing. But they can also be honest and loyal. And they would give up everything to protect someone they love. Even if they were from another planet.

Professor Fine:
Kal-El...

Clark:
My name is Clark. And I'll always believe in my friends and my family.

Professor Fine:
I sincerely hope your trust hasn't been misplaced.