From "Smallville: Abyss (#8.9)"
Welcome home, my son.
Home? I wanted to see it that way, Jor-El. I wanted to learn more about my family, about my destiny. And then you tore it all away.
I programmed the fortress to remove your powers and self-destruct if you became a danger to the planet.
When you sent me here, you had no way of knowing how I would use my abilities. You trusted me. When I betrayed that trust, you were willing to sacrifice your only son to save this planet. But now I know what it truly means to protect people, not just my family and friends.