Just above the trailer on this page www.spiritualteachers.org/bladerunner.htm you mention to make sure that we purchase "Ridley Scott's Blade Runner: The Final Cut". However, the following quote that you have on the page is not in the The Final Cut because it is part of the narration that the studio forced for the original theatrical version:
Deckard: All he'd wanted were the same answers the rest of us want. Where did I come from? Where am I going? How long have I got?
From what I can tell the above quote is part of a longer quote in the narrated version:
Deckard: [narrating] I don't know why he saved my life. Maybe in those last moments he loved life more than he ever had before. Not just his life - anybody's life; my life. All he'd wanted were the same answers the rest of us want. Where did I come from? Where am I going? How long have I got? All I could do was sit there and watch him die.
In this quote, removed from the The Final Cut, Deckard misses the whole point of why Roy let him live. In Roy's last moments he didn't kill Deckard, IMO, because he wanted to impart a few of his memories to Deckard so as to live on in Deckard's memory.