I originally found the quote in a computer science book, and it interested me enough to seek out The Rubiyat to read. The version I found (online I believe) was actually a translation of several different versions of the work I believe? I'm not sure who the translator was. The quote in particular was only present in one of the 'versions' of the work. I imagine translating poetry, of all things, would be tremendously difficult, but as I don't know many other languages I had to take what I could get. Regardless of source, I think the quote is very insightful and stupendously relevant in todays world that seeks to reduce all people to an easily manipulable optimized factor in a rigid system. Viewing those systems as a game to optimize in turn seems the only rational course.