Lionel and Lex in “Unfinished Business”

Lionel

You have a ferocious desire to find all the answers, son, but don't let your search for those stones turn into your personal Tower of Babel.

Lex

I'm not trying to get closer to God, Dad. I'm trying to solve the riddles He's laid out for me.

Lionel

Did you ever think there might be a reason why we weren't given the answers?

Lex

To challenge us?

Lionel

Or maybe to humble us. Knowledge comes from finding the answers, yes, but understanding what the answers mean is what brings wisdom. Men who didn't understand the difference have been the ruin of some of the world's greatest civilizations.

Lex

Is that why you stopped looking for the stones? Because you're afraid?

Lionel

No. No, I stopped because I realized that even if I find the three stones, I'm not gonna find what I'm really looking for. Neither will you.