Smallville2001

Lionel Luthor:
Do you remember the fable of the frog and the scorpion, Lex?

Lex Luthor:
Yeah, dad. The, uh, frog helped the scorpion across the river. The scorpion repaid his kindness by stinging the frog.

Lionel Luthor:
"Why did you do it?", the dying frog asked him. And the scorpion replied "Because it is my nature." Believe me, Lex, your brother will never change. I've watched him over the years. The boy's a sociopath.

Lex Luthor:
And I wonder which side of the family tree he got that from.