Comment by ajb

Don't know it, but this website attributes it to the Rubaiyat of Omar Khayyam: https://theomarkhayyamclubofamerica.wordpress.com/extended-r...

(Edited on reading more closely) Or possibly some fan work, since this "Extended Rubaiyat" isn't entirely from Omar Khayyam. So this doesn't pin down the provenance of the phrase.