Because I can't leave well enough alone, I kept googling. The specific phrasing you used definitely seems (from a cursory examination) to be from Blade Runner. I can't find anything in Google Books referring to it before 1982. So attributing it to "Roy Batty in Blade Runner, script by Hampton Fancher and David…

I don't know who said it originally, I just know it's not in the Laozi. I'm pretty familiar with the book, and not only do I not recognize the line from it, it's not really the sort of thing that the Laozi talks about. If it was, it would frame burning "bright" as a negative, because the Laozi is very much about…

Not Laozi.