Smallville, Season 4

Jonathan:
Clark, as much as I hate to admit this, Lex had a hand in this too. He did make good on his promise to protect Chloe.

Clark:
And look what he got out of it. Control of LuthorCorp. Look, I'm sorry, but it's gonna take a lot more than that for me to get to trust him again.

Martha:
Ever since he met you, he's been surrounded by things he can't explain. We can't really blame him for trying to find the truth.

Clark:
The truth is, he's been lying to me from day one. The legend on the cave wall says I'm destined to have an enemy. All this time, I've been worried about Lionel. But I'm beginning to think that the real threat was right in front of me. I think it's Lex.