Lex Luthor and Clark Kent in “Unfinished Business”

Lex Luthor

Try to be more cautious. I let my passion get the best of me. I won't make that mistake again.

Clark Kent

Lex, I don't think having passion is such a bad thing.

Lex Luthor

You're right, Clark. Passion for life and work and friends is great. As long as you keep it in check. I should take a page out of your book.