Lastly, do not punish yourself for your feelings of vanity. Simply learn to control them. It is an affliction common to all, even on Krypton.

Jor El (Marlon Brando)

15 seconds sound clip from the Superman (1978) movie soundboard.

You can hear this line at 01:38:57 in the Blu-ray version of the movie.

Quote context

[...]

- Why?

- The reasons are two.

- First, you cannot serve humanity 28 hours a day.

- 24.

- Or 24 as it is in Earth time.

- Your help would be called for endlessly. Even for those tasks which human beings could solve themselves. It is their habit to abuse their resources in such a way.

- And secondly?

- Second, your enemies will discover their only way to hurt you: By hurting the people you care for.

- Thank you, Father.

- Lastly, do not punish yourself for your feelings of vanity. Simply learn to control them. It is an affliction common to all, even on Krypton.

- Our destruction could have been avoided but for the vanity of some who consider us indestructible.

- Were it not for vanity, why at this very moment I could embrace you in my arms... my son.

- Reports are coming in of a miraculous saving of Air Force One...

- A burglar was apprehended by a man in a blue suit and red cape...

[...]