I don’t think the line, “I, have seen things you wouldn’t believe …[fill in sci-fi]… All these moments will be lost in time, like tears in the rain.” was from Dick’s novel, “Do Androids Dream of Electric Sheep.” I think they got that one from William Blake.
Boy, but did Hollywood go hog wild for Philip K. Dick after that film. How many Dick stories have been made into movies since then? Total Recall, Minority Report, Screamers, Through a Scanner Darkly…