Batty: 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.
Deckard: Gaff had been there and let her live. Four years, he figured. He was wrong. Tyrell had told me Rachel was special: no termination date. I didn't know how long we'd have together...who does?
Rick Deckard: They don't advertise for killers in the newspaper. That was my profession: ex-cop. Ex-blade runner. Ex-killer.
Rachael: It seems you feel our work is not a benefit to the public.
Rick Deckard: Replicants are like any other machine: they're either a benefit or a hazard. If they're a benefit it's not my problem.
Gaff: It's too bad she won't live... But then again who does?
Deckard: 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.
Answer: The two most notable hints are as follows. The first (which is only in the Director's Cut) is that after Deckard dreams of a unicorn, Graf makes an origami unicorn and leaves it at Deckard's apartment. Some people interpret this as suggesting that they're aware of the memories that have been given to Deckard to prevent him realising his true nature. The second hint is that replicant eyes glow in certain lights - at one point in the film, Deckard's eyes can be seen glowing in the same fashion. Ridley Scott has stated on several occasions that, as far as he's concerned, Deckard is a replicant, but he does concede that they deliberately left it as somewhat ambiguous - the viewer should decide for themselves.
Tailkinker ★