Babylon 5, Season 2: The Coming of Shadows

Sheridan:
Mr…Sebastian, I did a little digging, based on what you told me. The records confirm you lived on Earth in the year 1888. The records also indicate that you vanished, suddenly, without a trace on November 11th, 1888. That's a very interesting date, Mr. Sebastian. The morning after the last of a string of murders in the East End.

Sebastian:
The city was drowning in decay. Chaos. Immorality. A message needed to be sent, etched in blood for all the world to see. A warning. In the pursuit of my holy cause, I…did things. Terrible things. Unspeakable things. The world condemned me, but it didn't matter because I believed I was right and the world was wrong. I believed I was the divine messenger. I believed I was…

Sheridan:
Chosen?

Sebastian:
[after a pause] I was…found by the Vorlons. They showed me the terrible depth of my mistake, my crimes, my…presumption. I have done four hundred years of penance and service, a job for which they said I was ideally suited. Now, perhaps, they will finally let me die.

Sheridan:
I think that might be wise.

Sebastian:
[turning to board a Vorlon transport] Good luck to you in your holy cause, Captain Sheridan. May your choices have better results than mine. Remembered not as a messenger, remembered not as a reformer, not as a prophet, not as a hero…not even as Sebastian. Remembered only…as Jack.