You would be banished to endless imprisonment in the Phantom Zone, the eternal void which you yourself discovered.
12 seconds sound clip from the Superman (1978) movie soundboard.
You can hear this line at 00:13:41 in the Blu-ray version of the movie.
Quote context
[...]
- My friend, I have never been otherwise. This madness is yours.
- This discussion is terminated. The decision of the council is final.
- You would accuse me of insurrection?
- Has it now become a crime to cherish life?
- Will you abide by the council's decision?
- Neither I, nor my wife will leave Krypton.
- Nearly.
[...]