The original saying was "where ignorance is bliss, 'tis folly to be wise", which seems much more nuanced and balanced than the thread title, which reduces it to a blanket endorsement of ignorance as invariably blissful. Which is bunkum.
― A is for (Aimless), Wednesday, 27 December 2017 22:25 (six years ago) link
+1But i think both readings are ok
― calstars, Wednesday, 27 December 2017 22:29 (six years ago) link