 CONT: After Clark is beaten up in the diner after giving up his  powers and now he realizes the Krypton villains wreaking havoc on  Earth, Lois tries to console him by telling Clark that "you didnt  know." Clarks response is "he knew." Clark was referring to his  father, whose scenes were filmed with Marlon Brando before they were  cut because of financial differences between Brando and the  producers. In the film that was released, it was Supermans mother  that tried to convince him to keep his powers, not his father.