In Blade Runner I find Rutger Hauer’s final speech most memorable:
“I’ve seen things you people wouldn’t believe. Attack ships on fire off the shoulder of Orion. I’ve watched c-beams glitter in the dark near the Tannhauser Gate. All those moments will be lost in time, like tears in the rain. Time to die.”
I was recently reminded of ths quote via George R.R. Martin’s list of His Favourite Science Fiction Films of All Time